hi im 21 and engaged tho we are not trying to have a baby right now were not, not trying. we use condoms up until a few days to a week before my cycle starts . my cycle is pretty regular every 24 days not a day before or later . for the past 2 weeks ive been having very dull cramps that come and go, lower back pain , my body aches, very little nasuea no vomiting , sleepy (but im always sleepy) kind of a white oderless discharge nothing to major and like pain in my butt cheeks .. i was supose to start on the 6 and its been 3 full days took a test and it was negative .i dont know whats going on .. can spmebody help me ??