Talk to Gastroenterologist on Weak Bladder And Burning After Urination

since the past 8 years, i am having burning sensation during and after urination. i visited doctors and all of my reports were clear, they asked to drink plenty of water. lorainne medicine helps heal the pain but since last year my bladder has also become weak. i feel drops being released when i bend down. consulted a urologist who prescribed me furolin 100 mg but i felt nausea from it. kindly reccomend me a solution or a good female doctor to consult