I am just making a suggestion but you might want to go to a urologist and also ask your urologist or GYN to give you a CAT scan with contrast so they can see if you are having problems with your bladder, ovaries, ulcer, etc. I'm so sorry you are having such problems but I would definitely stop the antibiotics if you don't have an infection and find a good doctor who can answer your questions. Get a second opinion and don't just take one doctors word for it. I don't know how old you are but if it were me being in this much pain, I would find answers and not just mask it with drugs. Take care and keep in touch and tell me what you find out. You can also go to many health sites and ask questions and find some answers too.