Hi, my name is Dineo, and i had a miscarriage on the 4th of February, everything was fine and went to normal periods but then decided to have birth control( injection) on the 29th of march and I'm  due to go again on the 30th May 2013. but now i have been bleeding heavily since the 19th April 2013 till to date. its my first time being on birth control. I'm so scared and don't know what to do. Is it normal ?