Ok, so i'm tired all the time, I feel bloated and (just recently) gassy. It looks like i've gained weight in my stomach area but the scale says I havent. I've taken a pregnancy test, it came back negative. My stomach constantly hurts, especially when I try to eat something. I know I had my period in september, but (because my memory sucks and I didnt write it down) I cant remember if I had one in october. My back has started to hurt me again and it hurts to stand on my feet for a long time now. I sometimes feel nausuas but dont throw up. I think it just might be a stomach problem, but could I be pregnant? Any advice?