if you want fewer side-effect, go fo something that works locally (i.e. just on your uterus) rather than systemically (i.e. your whole body) or even better, something that doesn't interfere with you hormones. Coil (mirena) worked well for me but it can be quite uncomfortable having it put in. Nevertheless, if I needed contraception, that's would I would go for again. I had irregular bleeding for the first few months but after that settled, I had no other side-effects.