Skipped/late period? Pregnant??

Hey guys! I’m 19 and definitely not ready to have a baby. My boyfriend and I broke up and we had unprotected sex twice. And it was probably between 5-7 days apart from each other. My period is late by 11 days. I’m really stressed out! And my boobs have been sore for like 5-6 days. I’m really nervous. But here’s the thing. The first time, he didn’t even finish and it was his first time ever. And he said he wasn’t even close to finishing. And I’ve never noticed him ever having any precum. And the second time, he did finish but he pulled up like 5 minutes before he even finished. So I’m probably just paranoid, but I need some advice!!