Help?

Katavia
Okay my partner and I had sex. (Without a condom). He pulled out, then started to ejaculate it didn't get near me or anything. It was my first time having sexual intercourse July 20th .. My period was due July 25th, well I got my period 2 days early. And I bled heavy the first 2 days and now I'm spotting my period usually lasts for 4 days, could I be pregnant? Or am I just overthinking because it was my first time having sex?