I received my first depo provera shot in march 2010, my last shot was in april 2011. While I was on Depo I had a period every 3 months right before I was due for my next shot. I was due for my last shot in July but Decided I wanted to stop taking birth control. I got my period as expected and then didn't get the shot. A week later i got my period again, and then about 2 or 2 1/2 weeks i got my period again. Now it has been about 5 weeks without a period. What should i expect, and when should i be thinking i could be pregnant? Thanks for your help!