Fear of the IUD: myths and truths about its risks and side effects

The copper IUD, and later the Mirena IUD, became two of the most popular methods of birth control among women, due to its convenience and effectiveness. However, many are still reluctant to this method for various reasons.

To explain the causes of fear of the IUD, it is essential to know its method of operation. The IUD is a small T-shaped device that the gynecologist places inside the uterus. In the case of the copper IUD, its action consists of blocking the passage of sperm, while the Mirena IUD also uses the release of hormones with the same objective of preventing pregnancy.

Fear of IUD side effects

In both cases, one of the reasons women often give for not using the IUD is the dangers of keeping a foreign object in the body for several years (usually three to five) and the possible long-term side effects that result of its use.
The IUD is a physical device, therefore there is a possibility, although not very high, that it will move, causing it not only to lose its effectiveness, but it can cause injuries or wounds inside the uterus. This can increase the risk of contracting infections that affect a woman's fertility.
For this reason it is especially important to regularly check the threads of the device that indicate that it has not moved. Another common fear is that of suffering an allergy to copper, which can lead to serious complications, although many devices, especially the Mirena IUD, are made of plastic to avoid this problem.
The Mirena IUD causes mistrust of another caliber, not so much related to the device as to the use of hormones. The action of progesterone can cause various side effects, such as headaches or weight gain, especially in the first months of its use.
Lastly, we must bear in mind that another common fear is discomfort, not only when inserting the IUD, but also when using it, especially during sexual intercourse. Before choosing or discarding the IUD, the most important thing is to speak with the gynecologist to inform us of the most appropriate contraceptive method for our specific case.

## Understanding the real risks vs. myths (expanded) Many fears about IUDs arise from anecdote, misinformation, or outdated data. Below I separate common myths from evidence-based facts and add practical guidance on how to reduce risk. - Myth: "The IUD can travel to other parts of the body." - Fact: Uterine perforation — a tiny risk during placement where the device punctures the uterine wall — can occur, but the device does not “travel” freely through the body. Perforation is uncommon (estimated 1–3 per 1,000 insertions) and is typically identified at or soon after insertion. If perforation occurs, most cases are managed surgically and with good outcomes. - Practical advice: Ask your gynecologist to perform a brief ultrasound or physical exam immediately after insertion if you have severe pain or if the strings are not found on self-check. Keep the clinic's emergency contact number handy for the first 48–72 hours. - Myth: "IUDs cause infertility." - Fact: Neither copper nor hormonal IUDs cause long-term infertility. The small risk of pelvic infection is highest in the first 20 days after insertion if an STI was present at the time of insertion. Proper screening and safe insertion reduce this risk. Fertility typically returns quickly after IUD removal — within months for most women. - Practical advice: Get STI testing before insertion if you are at risk or your status is unknown. If you have recurrent pelvic inflammatory disease (PID), discuss alternatives, since PID is a cause of infertility. - Myth: "Hormonal IUDs dump large amounts of systemic hormones into my bloodstream." - Fact: The levonorgestrel IUD (Mirena and similar) releases local, low-dose progesterone primarily in the uterine cavity. Systemic levels are much lower than with most oral contraceptives. Side effects like mood changes or weight gain can occur but are usually mild and often resolve after several months. - Practical advice: If you have a history of severe mood disorders triggered by hormonal contraception, discuss experiencing choices and close follow-up. ## Common side effects — what to expect and how long they last - Copper IUD: - May cause heavier, longer, or more painful periods (dysmenorrhea), especially in the first 3–6 months. - Cramping around insertion commonly resolves within 24–72 hours. - Real example: A 28-year-old patient reported heavier periods for two cycles after copper IUD placement. With NSAIDs for cramps and tranexamic acid during heavy days (prescribed by her gynecologist), her bleeding returned near baseline by month four. - Levonorgestrel (hormonal) IUD: - Often causes irregular spotting in the first 3–6 months; many patients then experience lighter periods or amenorrhea (no periods) after 6–12 months. - Common initial side effects: breast tenderness, headaches, acne changes, nausea — typically transient. - Real example: A 35-year-old who switched from combined pills to a Mirena experienced 3 months of spotting and mild headaches; by month five her periods had stopped and she reported improved menstrual cramps. Actionable management tips: - Pain at insertion: - Take 400–600 mg ibuprofen 1 hour before the appointment (unless contraindicated). - Local cervical blocks (lidocaine) can be offered by the clinician; ask if available. - Schedule during your menstruation if the cervix is naturally softer and placental-like changes may make placement easier. - Post-insertion cramping: - Continue NSAIDs for 24–72 hours as needed, use a heating pad, rest. - Heavy bleeding with copper IUD: - Short-term treatments: NSAIDs, tranexamic acid (if appropriate), combined oral contraceptives for a few cycles, or consider switching to a hormonal IUD if bleeding intolerable. - Persistent mood changes or acne with hormonal IUD: - Reassess after 3 months; if symptoms persist and are bothersome, removal and alternative contraception should be discussed. ## Insertion and removal: realistic expectations and preparation - The appointment usually lasts 10–30 minutes. - Steps in insertion: - A pelvic exam, cervical cleansing, possibly a cervical sound to measure depth, and insertion using a sterile technique. There is a brief pinch/cramping during placement. - Pain levels vary — nulliparous patients (never given birth) sometimes report stronger cramping, but many tolerate insertion well. - Actionable preparation checklist: - Take analgesic (ibuprofen) beforehand. - Eat a normal meal and hydrate. - Wear comfortable clothes and consider bringing a pad for possible spotting. - Arrange light activity for the remainder of the day; avoid heavy exercise if you have significant cramps. - Removal: - Quick clinic procedure: the clinician pulls the IUD strings; mild cramping may occur. Ultrasound or hysteroscopy may be needed if strings not visible or device embedded. Real example: A 22-year-old anxious about insertion used guided breathing and pre-medicated with ibuprofen; she reported moderate cramps for several hours but was able to return to work the next day and felt relieved at the convenience. ## New H2: How to monitor your IUD at home and when to seek medical attention Regular self-checks and awareness prevent complications and reduce anxiety. I teach patients a simple, reliable routine. - How to feel for IUD strings: - Wash hands thoroughly. - Sit on the toilet, squat, or insert one clean finger into the vagina to reach the cervix. - Feel for thin strings at the cervical os; the strings are typically 2–3 cm long. - Do not pull on the strings. If you cannot feel them, it may still be correctly positioned; see your clinician for an exam. - How often: - Check once a month, ideally after each period for the first 6 months, then every 3 months, or if something changes. - Signs that require immediate evaluation: - Severe abdominal pain, fever, heavy bleeding soaking a pad/hour, sudden loss of strings, inability to feel strings but severe pain, signs of pregnancy (missed periods, positive pregnancy test). - If you become pregnant with an IUD in place: seek immediate care. The risk of ectopic pregnancy is low but increased proportionately if pregnancy occurs on an IUD. - Practical scenarios: - If you notice longer strings: don’t pull; contact the clinic. Longer strings could indicate expulsion or that the device moved toward the cervix. - If strings are shorter or absent: schedule an appointment. Your clinician may use speculum exam and ultrasound. If expelled, emergency contraception may be necessary. Action steps for clinicians and patients: - Before insertion: perform STI screen if indicated, discuss sexual history, explain how to check strings, and provide written instructions and clinic contact details. - After insertion: offer a follow-up visit at 4–6 weeks if there were insertion difficulties, severe pain, or heavy bleeding; otherwise advise to return if problems occur. ## New H2: Choosing the right IUD for you — individualized decision-making and case examples Selecting an IUD should be personalized. Below I outline a decision framework and give practice-based examples. Decision framework: - Desire for future fertility: - If you plan pregnancy within a year, both copper and hormonal IUDs are reversible; fertility generally returns quickly after removal. - Menstrual goals: - If you want lighter periods or fewer cramps: consider levonorgestrel IUDs (e.g., Mirena) — often reduce bleeding substantially. - If you prefer a hormone-free option and accept possibly heavier periods: copper IUD might suit you. - Medical history considerations: - Breastfeeding: both types are safe postpartum; hormonal IUDs have minimal systemic effect on milk supply, but many clinicians prefer to wait 4–6 weeks postpartum for insertion (immediate postpartum insertion is an option in some settings). - History of PID or high STI risk: screen and treat infections pre-insertion; assess sustained risks. - Severe anemia due to heavy periods: hormonal IUD is often a therapeutic option. - Age and parity: - IUDs are effective and safe for adolescents and nulliparous women; insertion technique and counseling should be adapted for comfort. Real case examples: - Case A — Heavy, painful periods: - 30-year-old, heavy menorrhagia with iron deficiency. She chose a levonorgestrel IUD. After 6 months her bleeding reduced significantly and her hemoglobin improved with iron therapy. - Case B — Wants hormone-free contraception: - 26-year-old athlete prefers no hormones; she accepted that her copper IUD may increase menstrual bleeding and chose it after counseling and planning NSAID strategies. - Case C — Postpartum contraception: - 33-year-old breastfeeding mother opted for an immediate postpartum copper IUD placed after delivery; she appreciated no systemic hormones and avoided another hospital visit. Checklist for your consultation: - Review medical history, allergies, and prior contraceptive experiences. - Discuss bleeding expectations and side-effect timelines. - Make a plan for pain control and follow-up. - Provide emergency contact and warnings about red-flag symptoms. ## Addressing psychological fear and informed consent Fear of an IUD is not only physical — anxiety about control, body autonomy, and medical mistrust are real and valid. Practical steps to help patients feel informed and empowered: - Shared decision-making: - Offer clear, jargon-free explanations, visuals of the device, and a stepwise outline of what insertion will feel like. - Consent planning: - Give written consent forms that clearly list common side effects and rare but serious risks. - Anxiety reduction techniques: - Offer to have a support person present, use shorter appointments for more discussion, or schedule a pre-insertion counseling visit. - Alternatives: - Discuss non-IUD options (implants, pills, injections, barrier methods) and the relative pros and cons. Real example: A patient with needle phobia opted for a two-visit approach — initial counseling with videos and a second appointment for insertion with sedation options discussed. This approach reduced her anxiety and improved satisfaction. ## Debunking specific popular myths - "You cannot get an MRI if you have an IUD." — False. Most modern IUDs are MRI-safe, though the manufacturer instructions should be followed; ask your clinician for the device specifics. - "An IUD can cause systemic copper toxicity." — False for those with normal renal function. Copper IUDs release very small amounts of copper locally; systemic copper toxicity is not seen in routine use. If you have Wilson’s disease or other rare disorders, consult a specialist. - "You can't have an IUD if you're a virgin." — Sexual history does not automatically exclude you. If you have an intact hymen and no history of penetrative intercourse, some clinicians will still perform insertion if medically appropriate, but options and comfort should be discussed. - "The IUD causes weight gain." — There is no convincing evidence of significant weight gain caused directly by levonorgestrel IUDs; lifestyle, diet, and other factors often account for weight changes. ## Practical resources and products - If you prefer educational materials or discreet supplies, see our [shop](/shop) for post-insertion care products (heat packs, NSAID organizers) and comfort items. - For broader reading and related topics, visit our [related topic](/blog) section which includes articles on contraception, STI prevention, and fertility planning. ## When an IUD is not appropriate - Active pelvic infection (e.g., untreated chlamydia or gonorrhea). - Known uterine anomalies (significant distortion of uterine cavity) that make fitting difficult. - Certain cancers of the reproductive tract. - Pregnancy. - Allergy to components of the device (very rare). If you have complex medical conditions (e.g., certain clotting disorders, immunosuppression), discuss risks with your specialist. ## Follow-up protocol — clinician recommendations - Immediate post-insertion counseling and emergency contact details. - Optional routine 4–6 week check if insertion was difficult or there were complications. - Annual checks during routine gynecologic care to review positioning and any side effects. - Remove or replace device at manufacturer-recommended interval (usually 3–10 years depending on type) or sooner if issues arise. ## Evidence-based perspective on rare complications - Expulsion: Occurs in about 2–10% of users in the first year; higher in those with heavy periods, insertion immediately postpartum, or younger age. If expelled, contraception is lost. - Perforation: Rare (1–3/1,000); often associated with insertion technique. Increased risk with inexperienced operator and with insertion soon after delivery or lactation. - Pelvic infection: Slightly increased risk within the first 20 days if STI present during insertion; thereafter risk returns to baseline. Proactive clinician action: Use standardized insertion protocols, screen/treat STIs before insertion, and train clinicians in ultrasound-guided insertion for difficult anatomy. ## FAQ ### Is getting an IUD insertion very painful? Pain varies. Many patients experience a brief intense cramp during cervix manipulation and IUD placement, followed by milder cramping lasting up to 48–72 hours. You can reduce discomfort by taking 400–600 mg of ibuprofen about an hour before the appointment (unless contraindicated), using relaxation techniques, and scheduling insertion during your period when the cervix may be softer. Ask your clinician about local anesthetic options. If you had a difficult insertion or intolerable pain, discuss alternatives or removal. ### How soon is the IUD effective? - Copper IUD: Effective immediately after insertion for contraception. - Hormonal (levonorgestrel) IUD: If inserted within the first 7 days of the menstrual cycle, it’s effective immediately; if inserted at other times, use back-up contraception (e.g., condoms) for 7 days. Your clinician will give clear guidance based on timing. ### Will an IUD affect my future fertility? No. Fertility returns rapidly after IUD removal in the vast majority of people. The IUD itself does not cause long-term infertility. The exception is if an untreated pelvic infection occurs and leads to scarring; this is uncommon with appropriate screening and prompt treatment. ### Can my partner feel the IUD during sex? Most partners cannot feel the IUD. Occasionally, partners may feel strings during intercourse. Trimmed strings or different string angles can reduce this complaint; your clinician can trim slightly if needed. If there's pain for either partner, seek an exam to ensure correct positioning. ### What are the red flags after IUD insertion that mean I should seek urgent care? Seek immediate care if you have: - Severe abdominal pain not responsive to analgesics. - Fever or chills (possible infection). - Heavy bleeding soaking a pad per hour for several hours. - Sudden loss of IUD strings or inability to locate strings combined with pain. - Positive pregnancy test or symptoms of pregnancy. Your clinic should provide clear instructions on emergency contacts after insertion. --- Category: Health Issues Topic: Fear of the IUD: myths and truths about its risks and side effects If you want individualized advice, schedule a consultation so we can review your medical history, contraception needs, and preferences. You can also explore more resources on our [related topic](/blog) page or find helpful post-care items in our [shop](/shop).