Im 18, and i am on a birth control called "Gildess FE 1/20" which is generic for Lo-Estern or something like that, i was on it for a while till i was told i had abnormal cell's and when into the freezing procedure to get rid of them, so i stopped taking it and about 4 months later i decided to get back on it, i started and waited till i got off to take it, i started on a saturday and started bleeding the next day it hasn't stopped since and has been a month, it's very heavy but sometime's it'll be light for an hour then hit all over again, i dont cramp much but when i do it's very painful, im sleepy and moody all the time and back hurts all the time, does anyone have any idea what could be causing this??