Copper IUD and irregular periods: what to know

A period that arrives earlier or later than expected can occur during adjustment. Bleeding after sex, pelvic pain, or a sudden change after a period of stability can have other causes, including infection, pregnancy, or a device that has moved. A copper IUD protects against pregnancy, but no contraceptive method eliminates the possibility completely. The strings may feel different if the device has shifted, although checking them does not confirm its position.

Track bleeding days, flow, cramps, medicines, and any missed period. Use the pain relief recommended for you and follow the label or clinician’s instructions. Do not pull the strings or try to remove the device yourself. Arrange a review if bleeding is interfering with daily activities, continues beyond the expected adjustment period, or leaves you tired or dizzy. A clinician can check the device, consider a pregnancy test or infection assessment, and discuss whether another method suits you.

Seek urgent medical help for very heavy bleeding, severe or worsening lower-abdominal pain, fainting, marked dizziness, fever, or unusual-smelling discharge. Get prompt advice after a positive pregnancy test, especially with pain or bleeding, because a pregnancy outside the uterus must be considered. Contact a clinician if you cannot feel the strings, feel hard plastic at the cervix, or think the IUD has come out; use backup contraception until you receive advice.

Ask whether your bleeding pattern fits expected copper IUD effects, whether the strings and device position should be checked, and which pain relief is suitable with your health history. You can also ask how to recognise infection or pregnancy symptoms and what non-hormonal or hormonal alternatives are available.