Unprotected sex help?

My boyfriend and I had sex today. it was unprotected, but he pulled out, i cleaned him off with oral, peed (I did as well), then we went for round 2. He pulled out again, but then he wanted to keep going but i wouldn’t let him unless he peed again (which he did.) So we went AGAIN and afterwards he came again and i peed afterwards and that was the last time. What are my chances of getting pregnant? BTW my period is expected in 5 days. I heard that peeing is an effective way of cleaning the urethra and he’s confident he didn’t cum inside at all, but just to make sure???