Hello Doctor, 20 days ago I get my period after it has been delayed with birth control pills Belara (I have six months taking them to remove a cyst) it makes as four days I had sex and similarly use a condom but it broke, as I am taking The pills correctly, the next day I started to have brown staining flow and right now I m a little as if half menstruation, I m a little worried, is it because of the cyst or birth pills? Or is something else I should worry.