type of birth control

So I used to be on the depo shot, didn't like it because it took me forever to get pregnant after coming off of it. But my boyfriend was able to finish inside of me while I was on it and I never got pregnant. Fast forward now i just had my baby girl and I want to get on another birth control. But I also want to have a child within the next year or 2, so depo is out of the question. How did you ladies like the IUD? Also if I get that put in, will my boyfriend still be able to finish inside of me and I won't get pregnant??