I was on the depo shot was bleeding in April was due to get another depo shot in may my boyfriend and I are having a un protected sex. I'm not having a period now could I be pregnant?

The short answer: YES!

Birth control reduces the risk of pregnancy, it does not eliminate it. Even used perfectly, there is a risk of pregnancy with Depo-Provera. When used inconsistently, leaving gaps in protection, that risk increases. Take a pregnancy test.