Late period

I think I would be considered sexually active (haven't had vaginal sex yet, though), so most of the time I don't worry. I guess I worry because I know any sperm can cause a girl to get pregnant, and even though we're careful and it never gets on or directly around my vagina, I guess my worry is that I'll somehow get some cum around there. Should I worry as much as I do? 😅😅😅