So I've had sex before but I've never felt like my vagina itches the day after. What does that mean? Also, I had sex with my boyfriend and I went pee and it stung a lot when I urinated. What does that mean? Is it normal?

Go to the Doctor. Could be anything from STD to UTI.

Yeah, you probably need to see a doctor for this one.

Did he wear a condom? Did you use a lubricant? It could be an allergic reaction.