I got my first depo shot on the 17 of july. I got the shot 9 days after my period. 2 weeks later on the 31 of july i had unportected sex with my boyfriend and he ejeculated inside of me multiple times. Could i possibly still get pregnant? I heard from different people that it takes 7 days or even a whole month for the shot to actually start working so im not sure if i was protected or not. Please help!!