Confused???

Glow says I'm ovulating, but I'm have bad cramps in my back. It started off as sharp pains when I sat down or when my one year old would put pressure on my stomach. My stomach is sore, back cramps, nausea, boobs hurt really bad to the point where I can't even wear a bra, certain smells make me sick! I don't think I'm pregnant since I had light bleeding this month, but I didn't have a period in may. Does anybody know what this can mean ?!