😁 Not on birth control anymore 😬

Ok, so I had unprotected sex Friday (yes I know the risk). So he said he didn't "come" inside of me, but I know he did. I guess he thought I was going to be mad (which I am a little-but it takes 2). Well today my period is 2 days going on 3 days late 😔. I was on the depo shot previously for 2 years but decided to get off in December of 2015. My period started to regulate in April of this year. I guess what I'm asking is there a possibility that I can be pregnant? I mean being that I was on depo for so long? Oh and also being that my period was about to come down...I couldn't have been ovulating right??? I'm confused 😒