I have been on depo since feb this year and stopped in august, (had unpretected sex twice) now I think im pregnant but am most probably not. But I feel like I have all the symptons of pregnancy like my nipples are big and very sore and also have alot of white bumps on them, also I have bad wind slight pains in my stomach, once nine oclock comes at night I cant keep my eyes open, my jeans dont fit im light headed sometimes and I keep getting headaches now and again. Can these be side effects from depo?