I just recently started having sex and I'm not on any birth control. I used to take the pill to regulate me but I'm so forgetful that I would forget to take my pills. I've don't the depo shot and it messed me up. I was having month long periods crazy weight gain and mood swings. So I wanted to try an IUD but I'm completely clueless about them. Can anyone educatate me on them and  he best ones?