Vagina swelling

i started getting thick white discharge the early part of the year so i assumed it was a yeast infection , i got treated but the symtoms came back. i went back and got a std test and a general swab and it came out fine. i would have swelling that would come and go and tissue dischsrge but i thought i was fine. i went for a physical that included std,hiv ,pap smear and blood work n everything was fine (this was 4 months after my symtoms) so i went back for a follow up and the doctor checked my pee and it had mircoscropic blood in it she put me on uti pills but ntn helped . i went to another doctor and did a std and general swab test and was told i have a staph infection ive been on zinnat for 7 days and my symtoms havent cleared up its really frustrating and i dont know what to do