Irregular periods with an IUD after 2 years: what to know

The type of IUD matters. A hormonal IUD may make bleeding lighter, less predictable, or absent, while a copper IUD can cause heavier or longer periods, particularly if that pattern has continued since insertion. A change after a stable pattern deserves a review rather than an assumption about the cause.

First, consider whether the bleeding is genuinely different from your usual IUD pattern: note spotting between periods, bleeding after sex, missed bleeding, unusually heavy flow, or cycles arriving closer together or farther apart. A hormonal IUD can alter the uterine lining and bleeding pattern. With a copper IUD, new heavy or prolonged bleeding may need assessment.

A pregnancy test may be appropriate if pregnancy is possible, even with an IUD. A clinician may also check whether the device has shifted and assess for infection if there is pelvic pain, unusual discharge, fever, or pain during sex. Other explanations for irregular periods include changes in ovulation, thyroid or other hormonal problems, and conditions such as [anovulation](/conditions/anovulation/), [polycystic ovary syndrome](/conditions/polycystic-ovary-syndrome/), [perimenopause](/conditions/perimenopause/), or [premature ovarian insufficiency](/conditions/premature-ovarian-insufficiency/). Irregular bleeding itself does not show which explanation is present.

Record when bleeding starts and stops, how heavy it is, whether there is pain, and whether you can feel the IUD threads as usual. Take a pregnancy test if relevant, and arrange a gynaecology or primary-care appointment if the new pattern persists, recurs, or is affecting daily life. Do not pull on the threads or try to reposition the device.

At an appointment, the clinician may review your IUD type and insertion history, check the threads, examine you, and decide whether testing or an ultrasound is needed. Treatment depends on the finding and your contraception goals; options may include observing a benign pattern, treating an underlying condition, or discussing another contraceptive method such as the [combined pill](/treatments/contraception-and-family-planning/combined-pill/).

Seek urgent medical help for severe or worsening lower-abdominal pain, fainting or marked dizziness, shoulder-tip pain with possible pregnancy, or bleeding that is rapidly soaking through protection. Prompt assessment is also needed for fever, feeling acutely unwell, or foul-smelling discharge with pelvic pain. These symptoms can signal a complication that needs timely examination.

If an IUD thread feels suddenly shorter or longer, the hard part of the device can be felt, or the device has come out, use backup contraception and contact a clinician. A pregnancy with an IUD needs prompt medical assessment, especially when pain or bleeding is present.

Ask: Could my IUD have shifted, and do I need an examination or ultrasound? Should I take a pregnancy test or have infection testing? Is this pattern consistent with my IUD type? What other causes of irregular periods fit my symptoms, and what treatment would preserve my contraception preferences?