Birth Control

I'm 25 and I've never been sexually active. However my fiance and I are looking at the possibility of sleeping together after waiting two years. I'm really new to all of this.

I was on the pill for a month last year to help regulate my period but it made my already large breasts swell and incredibly painful and recovery from an eating disorder stressful due to weight gain.

I haven't heard too great things on here about the shot, but I am curious about IUD's. Or pros and cons of all methods.

Obviously we were going to use condoms when we do decide to sleep together but I want extra protection since we're not looking to having children any time soon.