I got the depo shot on November 7th it's been the 3 months to get a new shot but sunday night I woke up and threw up and today I woke up and have been nauseous a day so bad that i get more nauseous when I eat I had sex on the 28th of January and I've been cramping for a week and been nauseous for a little less than week even tho the shot was still effective could I still get pregnant