I’m literally about to scream.

I was talking to this guy for a little bit. I had my period on April 4 and on the 6th we had sex. Then we had sex again after my period on the 11. He “didn’t come in me” but now he says “probably I don’t remember”. We’re not together anymore but he was the last guy I was with. I downloaded three apps. One says I’m two days late, this one says I have four more days until my period, and the third says I start it tomorrow. I’m fucking scared. I’ve been drinking a lot on the weekend since the 13th. Like this passed Saturday I got ridiculously drunk and don’t remember a whole lot of the night. Do you think I could be pregnant or maybe it’s the alcohol making me late? I heard it could do that but idk for sure. I normally don’t really drink like that.