Question 🙃

So yesterday I had an intense make out sesh w my boo, to the point that he entered me, but just once or twice. The thing is, I was drunk so I'm not sure if there was any precum on him (TMI BUT he came after, so I'm sure there wasn't any cum), should I go and buy the day after pill? He says that nothing came out, but should I play it safe? I'm 16 🙃