Hey girls!

So last night me and this guy that are talking had sex, we used a condom and I’m also on the pill. I’m not 100% with taking the pill at the exact same time every day but I do take it within the 24 hours of every day. When he took the Condom off I realised that there was cum near the opening of the condom. Should I be okay or is it better to get plan B. I’m 17 and he’s 18. TIA