I've been on the depo shot for almost a year now and when I first got on it my period went away I never got one. Then one time I was late on my depo and I ended up getting a period. Now I'm getting a period and it says I'm not scheduled to get my next shot till August 20th. My boyfriend and I have sex regularly and he usually pulls out. (which I know isnt that affective) but he has cum in me acouple times. Could I be pregnant?