am I overreacting?

so my boyfriend had masterbated the night before I saw him so he clearly pee'd before we had sex. I then saw him on the 10th day of my cycle and we had unprotected sex. he did not ejaculate. my cycle is usually 32 days so my ovulation should be cycle day 18. If there much of a chance for pregnancy here? I'm really not ready for kids I know what we did wasn't smart.