Plan B and Condom

Hi all,

Last Friday I had sex with my boyfriend. We used a condom and it was fine until he felt something strange outside of the condom. It was a lubricantes one, and I was wet. He was really worried that sperm spilled out of the condom (idk if’s possible). I freaked out because well, I don’t want to get pregnant. We checked the condom and it didn’t break but we were still really worried. According to the app, I was 3 days away from my “fertile window” and of course I was extremely worried. So I decided to take Plan B just in case something did happen. I’m still extremely worried and I’m afraid of what might happen. Any knowledge on this topic? Help!