Bad vaginal pain? Please help!

Me and my boyfriend last night were having anal, at one point he slipped out and banged hard in(?) or near my vagina. Later on, he put on a condom and we had really rough sex. It hurt bad but then the pain went away. Today though (around 8-9) right out my vagina ( and maybe every so slightly inside, not deep inside though.) is hurting and burning badly. There is not itch and it isn't red on the outside. What can I do? What medicines help? Because wearing a thong is really hurting being right next to it and sitting down is painful now too and so is walking.