I had unprotected sex with this girl last night for around 15 minutes then I decided to put on a condom to be more safe. I am very worried about the precum. I masterbated and ejaculated about 6 hours before having sex. I showered, but I'm not too sure if I peed or not. I am worried that my precum contained sperm. What are the chances it did? And what are the chances she could get pregnant?