This isn't about my period but I need help

So I recently got sick and had dierrea idk how to spell it anyway I'm 13 and my vagina hurts really badly it feels like it's burning and I tried getting a clean towel and soaked it with hot water and put it there but it isn't helping me it's hard to walk and sit and use the bathroom and idk what's happening. Can someone help me with a tip? Also it's burning near my butt hole but maybe where u would insert a tampon *idk cuz I haven't used tampons* but i think that's how I could say where the burning is located