This is the first time i ever took Depo shot, it was like 4 or 5 weeks ago, i just started spotting brownish/redish blood, i haven't got my period, i was suppose to get it last week, but i didnt : after getting the shot my bf and I had intercourse 3 weeks after getting the shot with out protection, he pulled out before cumin but still , can i be pregnant? Im scared & dont know what to do, HELP?