Hi, I had the RNY gastric bypass surgery December 9th 2011, because I was 397 lbs and didn t get my period for almost a year. After surgery the periods came back, so I went on the depo-provera in February. I took my next shot May 31 2012, and was scheduled for my next shot August 16-30th the latest. It s September 12th, could I be pregnant already?