My period has always been 2-5mo late annually. normal otherwise. sexually active dont use bc/condoms and never gotten pregnant. am i likely infertile

Can't tell: you need to be challenged, by stopping all birth control methods, try to conceive for at least a year in a stable relationship and regular intercourse, before deciding to investigate your ferlity status. Hormonal and ovulation studies , besides other studies as Ultrasound can be performed any time, but you still need to try to conceive, good luck