Contraceptive methods have evolved over the decades to a greater or lesser extent, and without a doubt the IUD is one in which it is easy to see the improvements. The introduction of the Mirena IUD was one of the greatest advances, which is why you may wonder if it is possible to change from a copper IUD to a hormonal one, the advantages and risks of such an operation. First of all, it is necessary to explain the differences between the two systems: both are made up of a small T-shaped device that is placed inside the cervix, but while the copper IUD works mechanically, the Mirena IUD uses of hormones to regulate the menstrual cycle.

Reasons for switching from one IUD to another

  • The copper IUD generally causes the duration and intensity of menstruation to increase, and this is often the reason why many women decide to change to the Mirena IUD, especially if they suffer from hypermenorrhea. With the Mirena IUD, menstruation decreases even to the point of disappearing.
  • The opposite may also be the case, since the Mirena IUD can cause rejection due to the use of progesterone, which is why some women prefer a more natural alternative. The copper IUD is the best alternative for women who have just given birth, for those who suffer more intensely from the side effects of the hormonal IUD or for those who prefer a longer-lasting method, which in the case of the copper IUD can be even up to ten years as long as there are no complications.
  • Regardless of the alternative chosen, it is possible to switch between both systems without any contraindications. Since both the expulsion and the insertion of the IUD are preferably done during the days of menstruation, we can ask the gynecologist to replace one with the other, or if the term of use of the IUD has expired, replace it with a newer and more effective model.
## How replacement is done — step-by-step, pain control, timing, and what to expect As an OB/GYN I perform many IUD removals and replacements. Here I describe the practical, evidence-based steps I follow and what I tell patients before, during, and after the procedure. - Pre-procedure assessment (what I do during the clinic visit) - Confirm desire to change IUD and review medical history: pregnancy plans, breastfeeding, history of pelvic inflammatory disease (PID), current pelvic pain, or abnormal bleeding. - Perform a focused pelvic exam to look for signs of cervicitis or active infection. If there is active cervicitis or suspected pelvic infection, we delay insertion until it’s treated. - Offer pregnancy test if the timing of the last period or sexual activity makes pregnancy possible. - Discuss the options and counseling: expected bleeding changes (e.g., heavier after a copper IUD, lighter with Mirena), side effects (mood, acne, breast tenderness with levonorgestrel), and non-contraceptive benefits (Mirena reduces heavy menstrual bleeding and dysmenorrhea). - Offer STI screening if indicated (recent partner change, symptoms, or high-risk behavior). - Explain backup contraception requirements: if the copper IUD is removed and another copper IUD is inserted or a levonorgestrel IUD is inserted at the same visit, contraception is effective immediately. If you remove an IUD and delay insertion, you may need backup contraception. - Timing - Many clinicians prefer removal and insertion during menses because the cervix is slightly more open and pregnancy is unlikely. However, it can be done at any time if pregnancy is excluded. - Immediate exchange (remove old IUD and place new IUD during same visit) is common and safe and avoids a period without contraception. - Analgesia and cervical preparation (practical options) - I routinely recommend taking 400–600 mg of ibuprofen 30–60 minutes before the appointment unless contraindicated. This reduces cramping for most patients. - For patients with previous difficult insertions, severe anxiety, or known cervical stenosis, options include topical cervical anesthetic, paracervical block (local injection), or oral analgesics such as naproxen. Routine use of misoprostol to soften the cervix is not generally necessary and can cause cramping and unpredictable bleeding; its use is reserved for select cases. - No routine systemic sedation is needed. I reserve conscious sedation or a procedure room for patients who previously could not tolerate in-office placement. - Removal technique (straightforward cases) - The clinician visualizes the cervix with a speculum, locates the IUD strings, and grasps them with ring forceps. Steady traction removes the T-shaped device; patients will feel a brief cramping sensation. - If strings are not visible, do not blindly probe. Perform a bimanual exam and order a transvaginal ultrasound to confirm device location. If the device is low in the cervix, removal may still be done in-office with specialized forceps. If intrauterine but strings not visible and retrieval is unsuccessful, hysteroscopic removal is the safest option. - Insertion technique (immediate exchange or separate visit) - After removal and counseling, the uterine cavity is measured with a uterine sound (gentle) to determine depth; this reduces the risk of perforation. - The appropriate inserter is used for the chosen IUD (copper vs hormonal). I insert the device to the fundus, deploy it, and cut the strings to the recommended length (about 3–4 cm beyond the cervical os). - I confirm that the device is in the correct position by palpation and, if uncertain, with transvaginal ultrasound. - Post-procedure care (what I tell patients) - Expect cramping and light bleeding for 24–72 hours; heavy bleeding is uncommon after a straightforward replacement but can happen. - Use NSAIDs as needed. Avoid tampons and douching for 48 hours. You may resume sexual activity as soon as you feel comfortable, but if your new IUD was inserted outside the first 7 days of your cycle and you did not have an immediate exchange, use backup contraception for 7 days (or follow specific product guidance). - Check your strings once a week for the first month so you are familiar with how they feel. If you cannot feel them, do not panic—come for an exam. Real example 1 — immediate exchange - Patient A: 32-year-old with copper IUD for 2 years complaining of heavier periods and iron deficiency. She chooses Mirena. We remove the copper IUD during menses and insert Mirena at the same visit. She receives ibuprofen beforehand, tolerated the procedure well, had light cramping, and benefits from decreased bleeding within 2–3 months. Real example 2 — removal first, delayed insertion - Patient B: 27-year-old with Mirena experiencing mood changes wants to try no hormones. We removed the Mirena in clinic. She opts for a copper IUD but wants to wait one cycle. I explained early return to fertility and recommended condoms or combined oral contraceptive until copper IUD insertion. ## Choosing the right IUD: individualized factors, comparative clinical scenarios, and practical decision-making Choosing to change IUD type is not just about bleeding patterns; it’s a clinical decision that must account for medical history, future fertility plans, breastfeeding status, and tolerance of hormones. - Key clinical considerations - Bleeding profile: If you have heavy menstrual bleeding or painful periods, a levonorgestrel IUD (Mirena or similar) often reduces menstrual blood loss by 70–90% within 3–6 months. - Desire for non-hormonal method: Copper IUD is hormone-free and preferred by those who want to avoid systemic hormones or who have contraindications (e.g., recent breast cancer). - Breastfeeding: Both copper and hormonal IUDs are safe postpartum, but the non-hormonal copper IUD is often preferred immediately postpartum in some settings. Levonorgestrel IUD can also be placed postpartum and has minimal systemic absorption; it is commonly used while breastfeeding. - Age and parity: Modern guidelines support IUD use in nulliparous women; insertion technique and counseling differ slightly (possible increased cramping). - Medical contraindications: Active breast cancer is a contraindication to levonorgestrel IUD. Wilson disease is a contraindication to copper IUD (rare). Current pelvic infection or untreated cervicitis is a contraindication to insertion until treated. - Desire for pregnancy: Copper IUD provides immediate return to fertility on removal. Levonorgestrel IUD also has rapid return to fertility after removal. - Example clinical scenarios and recommended approach - Scenario 1: 38-year-old with long-standing heavy menses and iron deficiency on copper IUD. - Recommendation: Switch to a levonorgestrel IUD (Mirena) to control bleeding; discuss expectations (periods often lighter, sometimes amenorrhea) and side effects (possible mood, acne changes). - Scenario 2: 26-year-old with history of mood swings and migraines with aura on Mirena. - Recommendation: Evaluate whether mood changes are clearly linked to levonorgestrel. If intolerable, remove Mirena and consider copper IUD or non-hormonal methods. Migraine with aura is not a contraindication to levonorgestrel IUD but does influence other hormonal choices (combined estrogen options are contraindicated). - Scenario 3: Postpartum breastfeeding patient wanting long-acting contraception. - Recommendation: Both options are acceptable. Many clinicians will place a levonorgestrel IUD at 6 weeks postpartum; copper IUD may be placed earlier in some settings. Discuss insertion timing and bleeding expectations. - Practical tips for selection and counseling - Use shared decision-making: explain trade-offs—hormonal IUD reduces bleeding, may reduce pelvic pain; copper increases bleeding initially but no hormones. - Discuss device lifespan: modern copper IUDs can last up to 10 years; Mirena and similar levonorgestrel IUDs last 3–7 years depending on product. - Insurance and cost: IUDs are often covered by insurance; check coverage. For devices and accessories, visit our [shop](/shop). For further reading on contraception and related considerations see our [related topic](/blog). ## Risks, complications, and how to reduce them No procedure is risk-free. Understanding, preventing, and recognizing complications reduces harm and improves outcomes. - Immediate risks during removal/insertion - Pain and vasovagal response: Prevent with pre-procedural NSAID, patient position, and calm technique. - Perforation: Rare (38°C (100.4°F), severe abdominal or pelvic pain, heavy bleeding soaking a pad hourly, abnormal or foul-smelling discharge, inability to feel strings or feeling sharp edges (may indicate expulsion or malposition). - If pregnant symptoms occur, get a pregnancy test immediately; if pregnancy occurs with an IUD in place, removal is recommended if strings are visible due to risk of miscarriage and infection. ## FAQ ### Can I have one IUD removed and a different one inserted the same day? Yes. If you and your clinician decide to change from a copper to a hormonal IUD (or vice versa), removal and insertion can be performed in the same visit in most cases. This immediate exchange maintains continuous contraception and avoids a gap. I advise taking an NSAID beforehand and ensuring pregnancy is excluded. If the existing IUD is embedded or strings are not visible, same-day exchange may not be possible and additional procedures or imaging may be needed. ### How soon can I get pregnant after removing an IUD? Fertility returns rapidly after removal of either a copper or hormonal IUD—usually within one ovulatory cycle for most women. If you are trying to conceive, you can start attempting as soon as the device is removed. If you want to avoid pregnancy immediately after removal and you are not having a replacement inserted the same day, use condoms or another reliable contraceptive method until you have restarted your chosen contraception. ### Is switching IUDs safe while breastfeeding? Yes. Both copper and levonorgestrel IUDs are generally considered safe during breastfeeding. If you want a hormonal option, levonorgestrel IUDs have minimal systemic hormone levels and are commonly used postpartum. Many clinicians will place an IUD at 6 weeks postpartum; in some settings, immediate postpartum insertion is possible but carries a higher expulsion risk. Discuss your breastfeeding timeline and preferences with your clinician to choose timing and device. ### What should I do if my IUD strings are missing after replacement? Missing strings are a common reason for concern. First, don’t panic—there are several possibilities: the strings have retracted into the cervical canal, the IUD has shifted, or it’s been expelled. Schedule an appointment promptly. Your clinician will perform a speculum exam and likely a transvaginal ultrasound to confirm device location. If the IUD is still in the uterus but strings are not accessible, removal can usually be done with special instruments or via hysteroscopy. If expelled, you may need a new IUD or alternative contraception. ### Are there medical conditions that prevent me from switching to a hormonal IUD? Yes. Certain conditions make levonorgestrel IUDs inappropriate. Active breast cancer is a contraindication to levonorgestrel-containing devices until after cancer therapy and assessment. Current pelvic infection is a temporary contraindication. Also discuss personal history of severe mood disorders or hormone-sensitive conditions with your clinician; while many patients with mood symptoms can tolerate levonorgestrel IUDs, if you have a clear temporal link between progesterone exposure and mood worsening, you may prefer a non-hormonal copper IUD. --- If you want step-by-step guides on insertion tools or patient leaflets to give in clinic, check product options at our [shop](/shop) and further clinical reviews on our [related topic](/blog). Category: Health Issues If you’d like, I can add printable pre-procedure instructions you can give patients (including medication, fasting instructions if sedation is planned, and consent checklist), or put together patient handouts comparing specific devices (Mirena vs Copper T vs other levonorgestrel IUDs).