I'm female and have had burning and general discomfort during urination for around two and a half months. I thought I had a UTI or a yeast infection, both of which I get pretty frequently. My gp did a pelvic exam, tested for STDs, and did a urinalysis. All of this came back negative, but she gave me a course of antiobiotics (bactrim) and yeast medicine just in case. These didn't work, so she sent me to a urologist. He did another pelvic and looked at my urethra and said everything looked normal. He said it sounded like I had "urethritis," that it could be hard to tell what caused that, and gave me a course of Zithromax and some more Diflucan. Neither of these are helping. What on earth could this be? I am worried about taking so many antibiotics since I'm prone to yeast. I