period irregularity anyone?

AJ
I've never had a consistent monthly period. 4 years ago I went to a GYN and she said it's probably that when I do get pregnant that I'll have twins or more, and recommended I go on BC. I refused, now that I'm married I tried BC for 2 months to try to regulate my period and had them - but I couldn't handle the depression and other emotions. It's not been a month since I stopped taking it. I'm worried I'm not fertile cause I don't have a period every month. Anyone have experience with this?