Me and my boyfriend had unprotected sex on May 20, he didn't ejaculate inside of me, since I got off in time.
I got a little paranoid, since he was pretty close to ejaculating inside of me (even though I saw him ejaculate right before my eyes after I got off)

My period started the next day, and it was pretty heavy. My period ends around on the 4th or 5th day, which is normal for me, so it happened like usual for this month. My period ended on May 24.

I'm just wondering, could I be pregnant or not?