HELPPPP

Hi my name is Daniela and I'm 23, currently I'm suffering of such a weird symptoms that any doctor have been able to help me I've been already in three and haven't been successful so the main thing is I'm really sore inside and out my vagina and I get to the point I can't even clean properly myself after pee because hurt and having sex is almost impossible rn, I already have 3 months feeling like this everyday and any treatment been helping, I had STD test and my bf also and is negative and also every test that the doctors did show that nothing is wrong with such a thing really frustrated for me, idk what to do, I'm desperate pls if anyone had something like this or have something in mind pls share with me xxx