I have been on the depo provera shot for 2 years now and i have never missed a shot and always got them on time but i had noticed that i started craving stuff and my feet would get swollen and my stomach was getting bigger and im like 100 pounds so you can tell my stomach is big but i started wondering if i could possibly be pregnant because my son had been acting strange and my mom and sister and grandmother kept saying i looked fat so today i decided to buy a $1 pregnancy test. And i took it and its a dark lines on the test and control. But i didn't think it was possible to get pregant on the shot. Advice please