What should you know about copper cooling coil?

Cooling coil is not the usual medical name for this method. People generally mean a copper coil, also called a copper IUD. A clinician places the small device inside the womb, where copper changes the local environment so sperm cannot move and fertilise an egg easily. It does not protect against sexually transmitted infections.

Cramping and changes to bleeding can occur after fitting. Periods may become heavier or more painful, particularly during the first few cycles. The device has threads that extend into the vagina; these help a clinician check its position and remove it when wanted.

Before fitting, tell the clinician about your periods, pelvic symptoms, pregnancy possibility, infections, allergies, and any medicines that affect bleeding. Ask how the procedure will feel and which pain-relief options are suitable for you.

After fitting, follow the advice you receive about activity and checking the threads. Keep a note of new pain, bleeding, fever, unusual discharge, or a change in the threads. A copper IUD can be removed by a trained clinician if you want a different method or want to try for pregnancy.

Contact a clinician promptly for severe or worsening lower-abdominal pain, fever, foul-smelling discharge, very heavy bleeding, dizziness, or concern that the device has moved or come out. Seek urgent help for intense pain with faintness or a positive pregnancy test, because pregnancy with an IUD needs prompt assessment.

Ask whether a copper IUD suits your bleeding pattern and medical history, what to expect during fitting, how to check the threads, and which symptoms should trigger a same-day call.