why are my periods so irregular?

Andrea

they are always at least a week late and sometimes i dont even get one. like i always get scared of pregnancy. But as soon as i take a test, my period shows up the next day. Can anyone give me some advice? Ive talked to my gyn and i dont have any hormone imbalances. No PCOS. oh and i didnt have a normal period until i started taking birth control for like 2 years and came off. Sorry this post is all over the place. Thank you in advance!