Possible to be pregnant?

I'm not gonna stress myself worrying, but basically I had sex with my boyfriend this morning- we used a condom, and it didn't break, but I don't know if his cum could still have maybe got somewhere near my area, as some of it was above his penis when I got off him. Should I take a test in a couple of weeks just in case? I'm 17 and not remotely ready to have a kid. Another factor- I'm apparently ovulating today according to this app, so extra worry! Thanks in advance for any replies, I appreciate it!