I've always had an irregular period, birth control helped but i've stopped using it. i haven't had my period for 5 months now & worry about fertility?

Other workup?: I assume you have discussed this at some point with your doctor if you were on birth control pills, but did they do any other workup- blood work, ultrasound? Not having regular periods definitely affects fertility so if you are thinking of getting pregnant, I would see your doctor for further workup to see if your periods can be regulated to make you more fertile.