I’m concerned

So on January 27th I had sex and for some reason cum got outside of the condom i started freaking out thinking I got cum in me and took a plan b that night maybe 25 mins after. But before that, on Jan 20th I had protected sex. I was supposed to get my period on January 23rd and didn’t get it. Fast forward to the 27th when I took the pill. I’ve been feeling no symptoms, just white discharge and I’m wondering when I should be getting my period. I don’t even wanna think about pregnancy because we don’t ever recall him cumming in me, we always check the condom. so yea what do you guys think?