NEED ANSWERS ASAP!!!😭😭

Ok ladies yes I realized I done fucked up, so don't shame me for what I'm about to say. Me and my bf had sex 4 times today and the 3rd time he didnt pee, so not ALL the cum got flushed out and then the 4th time I realized that in the middle of fucking, and so I stopped him. All that came out the 4th time was pre come but I'm still scared. And I know plan b fucks up your body, so should I take it to be sure or do y'all think I'm ok???

Edit:: so I know peeing does not prevent pregnancy. I never said that. I just know it flushes more cum out.

Edit #2:: I'm doing this update to explain to y'all ladies that me and my bf almost always use condoms. Obviously that time we didn't things got out of hand lol but I mean it happens to all of us, but anyways I decided to get take action I'm just so happy my bf got it for me, as I didn't have any money to get it but I plan on taking a pregnancy test in about 2-3 werks.