A quick comment on IUDs - I've got one because my doc prefers not to do surgery if possible - complications from various things, recovery from anesthesia, etc.
I've got a Merina, and it does have progesterone in it/on it, so if you have a drug sensitivity, that may be an issue. I will tell you that I was on the pill forever because of heavy periods, but I don't have any bleeding, maybe a little spotting with the IUD, no cramps at all - so I think it's great. It will have to be replaced every 5 years, but I never have to think about it otherwise.
[still, I always have a partner use condoms, because there's just too many other things to get, and give, I guess. Also, it makes me more comfortable with anal sex.]