Pregnant? Or just nerves?!

Okay so me and my boyfriend had unprotected sex on the last day of my ovulating day or whatever and it was a 9% risk of being pregnant. I am in no shape to have a kid right now and I been stressing out about this because before he put it in he had a little bit of cum on it... And right after the first thing I did was take a shower in hopes I could probably wash it out.. Do you think I could be pregnant? I been having cramps..