Pre-Cum W/Sperm? Help?!

We had sex during the day & he didn't pee after. So we had sex again & he pulled out but there was definitely pre-cum. So how possible is it to get pregnant from pre-cum? I am not ovulating my period is supposed to start this week.

I understand that if he cums there's still cum in his penis & if he pees after the pee cleans it out so the next pre-cum doesn't have leftover sperm in it ...but he didn't pee. Any suggestions?