I ve been on the depo birth control shot for about four months and only bled one time since I got the shot and it wasn t long after I got it. well a little over two weeks ago I had sex with someone and we didn t use any protection. Above my belly button and to the right of it has been hurting and also my right abdomen has been hurting. I was drinking the other night and couldn t finish my drink like I normally do because my stomach just started hurting, not like a nauseated feeling and my head started hurting. Well today my lower back is absolutely killing me and I started spotting bright red blood. Are they any chance I could be pregnant or having a miscarriage?