Experiencing pain and vaginal burning constantly some days ok other days bad. diagnosed with utis, ureaplasma, neg. for stds. no antibiotics helped?

Herpes?: Keep working with your doctor on this. UTI doesn't cause such symptoms. Ureaplasma almost certainly isn't the cause either; it's a normal bacteria in the genital tract. Herpes is a possibility, especially if there are sores in the inflamed area. Return to your doctor ASAP -- the sooner the better for more accurate herpes diagnosis and effective treatment. Good luck!