risks

I had unprotected sex! Could I have a STI? What should I do?

anonymous
asks:
I had unprotected sex (mistake #1) with an older guy who I don't know at all (mistake #2), but he didn't have any sores on his penis, and we only had sex for like 25 seconds, if that. If he didn't ejaculate in me and didn't have any sores, could it still be likely that I get a STD from him? He said he doesn't have any STDs, but people lie, and I'm obviously nervous....

Nothing else "works," so should I just have intercourse?

Anonymous
asks:
I'm 20 years old and I've been dating my boyfriend for over 5 years. We are both virgins. Early in the relationship I told myself that I didn't want to have sex until marriage (mainly because I was, and still am, paranoid about becoming pregnant. He's been very patient and has never tried to force or guilt me into having sex....