I've been on the depo shot for 2 years, I took my last shot in April of 2013 & I took many pregnancy test in between. coming to find out I wasn't pregnant, now I've gained a TON of weight. my stomach is growing day by day it looks like. I don't have any symptoms. (when my mother was pregnant for me she didn't either) I took two home pregnancy test they both came out negative. they only symptoms I'd say I have is headache & when something don't smell right it makes me sick. help anyone?