OK mamas, I need some advice I'm thinking that I might be pregnant but I'm not sure I've had…

OK mamas, I need some advice I'm thinking that I might be pregnant but I'm not sure I've had problems with trying to get pregnant for about two years I did the Depo-Provera shot and it sent me through a menopause like state. now this week before my period I've been sickly, crabby everybody I've had a headache and anything i eat that is greasy makes me sick, I've also been cramping on and off for the last week and I never cramp before my period. I took a pregnancy test the other day and it was a very faint positive. I took another one today and it was even fainter. I start my period in one day but I was just wondering if anybody had any advice or thoughts! thank you!