I stopped using birth control at the end of July 07. I had a normal period at the beginning of Aug. since I had just finished my last pack of b.c. pills. After that I didn't have another period until late Sept to early Oct. Then I didn't have my next period until two months later in Dec. It has now been 3 months since my last period in Dec. I know it takes some women up to a year to become regular after birth control but is it normal to have irregular periods and then none at all after quitting birth control?