Copper
"I was so worried about getting it fitted that the first time, when the nurse had only just starting going into my cervix and I could start feeling uncomfortable I chickened out. However I tried again, took a few more pain killers and went to a different place where the doctor was very experienced fitting coils on childless women like me and the nurse was lovely and held my hand and chatted throughout. It wasn't comfortable but it wasn't horrible either. I have some period type cramping and spotting for a few days and everything was fine, I even went for a run on day 3 after the fitting. My periods are slightly heavier than when I was on the pill but they are the same as when I wasn't on any contraceptive. I love it and highly recommend."