Advice

Can someone talk to me or give me advice? i hooked up with this guy at my college. we had sex etc and things were moving so fast i didn’t realise he didn’t put a condom on. so and the second that I was about to tell him that he should put on on he came. ( happened in 15 seconds, so i noticed fairly quick but he already came) However he did pull out. but when he pulled out he was cumming immediately so I’m not sure if sperm got in me. so to be safe I took a plan b 30 minutes after. this also happened the day before ovulation.im due for my period in 11 days. my cm had just been clumpy white, inside of me, not much on my underwear. do you guys think I’ll be okay. I really don’t want to be pregnant. I’m just a freshman in college.