An intrauterine device (IUD) is a highly effective, long-acting reversible form of birth control. It is a small, T-shaped device inserted into the uterus by a healthcare provider. Many people who use IUDs express a common concern: whether sexual activity might dislodge the device.
The Truth About Sex and IUD Displacement
Sexual intercourse is highly unlikely to dislodge an IUD, as its design and placement within the uterus make it quite secure. An IUD sits high inside the muscular uterus, a strong organ that provides a snug fit. Its T-shape, with arms that open once inside, helps it remain wedged against the uterine walls.
The cervix, the narrow opening between the vagina and the uterus, typically remains closed, forming a protective barrier. This means the IUD is not directly exposed to forces that could push it out during sex. While rare IUD expulsions can occur, these are generally unrelated to sexual activity. Expulsions are more common shortly after insertion, during menstruation, or in individuals with a smaller uterine cavity, heavy menstrual bleeding, or who have recently given birth.
Checking Your IUD Strings
Individuals can routinely check their IUD strings to ensure the device remains in place. These thin, soft threads extend from the IUD through the cervix into the upper vagina. They verify placement and are also used by a healthcare provider for removal.
To check, wash your hands thoroughly to prevent infection. Find a comfortable position, such as squatting or sitting on the toilet. Gently insert your index or middle finger into your vagina until you feel your cervix, which has a firm, rubbery texture similar to the tip of your nose. You should then feel the IUD strings, which typically feel like soft, thin fishing line. Feel for the consistent length of the strings each time you check, but avoid pulling on them.
Signs of IUD Displacement
Several signs might indicate that an IUD has shifted from its correct position. A noticeable change in the length of the IUD strings is a common indicator; they might feel significantly shorter, longer, or even be completely absent. New or worsening pain, particularly abdominal cramping or discomfort not relieved by over-the-counter pain medication, can also suggest displacement.
Other potential signs include unusual or heavy vaginal bleeding, or a change in normal bleeding patterns. Rarely, an individual might feel the hard plastic part of the IUD itself poking out of the cervix, rather than just the soft strings. Some individuals or their partners may also report feeling the IUD during sexual intercourse.
What to Do If You Suspect Displacement
If you experience any signs of IUD displacement, take immediate action. Use a backup birth control method, such as condoms, or avoid sexual intercourse altogether to prevent unintended pregnancy. Do not attempt to push the IUD back into place yourself, as this can cause harm or further displacement.
Contact your healthcare provider as soon as possible to schedule an appointment. They will perform a pelvic exam and may use an ultrasound to confirm the IUD’s position. Depending on the findings, your provider will discuss appropriate next steps, which could include removing the IUD or, if appropriate, replacing it with a new one.