Looking for birth control!

IUD? Pros and cons?  I'm starting to keep track of my ovulation cycles but I'm worried this won't be enough. The pill makes me crazy and when I think of the IUD I can't help but think I'm going to feel it all the time and especially when having sex with my bf. We try not to have sex in my ovulation window and I'm exploring other options. PLEASE HELP! Any advice on IUD? Or any other form that isn't the pill or crazy foreign to my body?  Thanks ladies!!!