Researchers continue to study the risks associated with or possibly linked to the Essure system. They may include:
- Pelvic pain
- Allergic reaction, including hives, itching and face swelling
- Heavy periods or spotting during ovulation
- Infection from the procedure
- Perforation of the uterus or fallopian tubes
- Shifting of the coils to other places in the abdominal cavity
Sometimes, the coils aren't placed properly or only one tube becomes blocked. This can result in unintended pregnancy. However, less than 1.5 out of 1,000 women get pregnant with the Essure system. When pregnancy occurs, it's usually because:
- Pregnancy occurred before the procedure.
- The coils weren't placed properly.
- Back-up contraception wasn't used for three to six months following the procedure, or until the doctor confirmed tubal blockage.
If you do get pregnant after having the Essure procedure, there's a higher chance that it will be an ectopic pregnancy — when fertilization happens outside the uterus, usually in a fallopian tube. Talk with your doctor right away if you have a positive pregnancy test after the Essure procedure.
After you have the Essure system implanted, you may not be able to have pelvic procedures involving electrosurgery, such as some types of endometrial ablation.
The Essure system doesn't offer protection from sexually transmitted infections (STIs).