What is the cause of having your period for the third time in one month? Does it have something to do with hormone imbalance? I m on birth control recently got back on track. First period was normal Oct. 6-10 , Second was very light Oct. 20 - 26, third period heavy and abnormal to me Oct. 27 - now! My clitoris is also irritated no burning but feels a bit swollen and a little itch here and there, quite uncomfortable when I wipe after using the restroom, What is happening to me?!