i had a molar pregnancy about two years ago i had it removed and i took oral contraceptives for ten months after and during that time i had a normal period but when i stopped my birth control i have ...
When you're on the pill, your period is not really a "period" in the sense that your womb is getting rid of the preparation for the egg. Rather it's a (usually) lighter bleeding because of the change in hormone levels. That's probably why you had a regular period while taking the pill.
Ask to be referred to a hormonal profile which will show any anomalies, and also check for cysts in your ovaries. At any rate, a lot of women have both (they're usually connected), most since pubery, and most manage to have kids and families, so don't worry too much, just get checked to see what it's about.