What could this be?

I've been having sex with the same guy for almost two years now without a condom. Yesterday we had sex and when he went in I felt a pain on my right side like almost in my stomach but then I was fine. It was rough sex so I was a little sore afterwards and didn't think much of it. I woke up today and my vagina itches and is now burning. No discharge, no odor but feels very dry. No pain while peeing but it does hurt to wipe. I'm just very uncomfortable. Any ideas what this could be?