Infection?

This morning my husband and I had sex, a little after my vagina started hurting and it's been slightly all day(when I move around). It's starting to feel like a light burning with itchiness here and there. I had some white discharge a little bit ago as well but I'm not sure if that's from this or not. My period is due in 3 days though I doubt that matters. What does this sound like and what are some treatments? I know it's not uti I have had those andthis is definitely the vagina. Sounds like a yeast infection to me but I've never had one so I'm not sure.