I am 18 years old and have been on the depo for roughly 6-7 months. (Background info: I have always had extremely terrible periods. Never been regular, and I ve always had an extremely heavy flow for up to 7 or 8 days until my period ended, and have had terrible and Immobilizing cramps that make me cry and not even want to breathe. The thought of endometriosis was thrown around which is partially why the depo was the next step. I tried several pills before getting the depo and the shot has givin me releif from the pain I had been going through) recently, following intercourse I have begun bleeding. It s started as a slight spot and is starting to seem like a light flow. Over the past few days I have started getting extremely uncomfortable cramps in my back, terrible fatigue, and sometimes constant abdominal discomfort. Is this because of the combination of sex while being on the depo or could it be something different?