Hi, You have the common problem of having a history of frequent recurrent urinary tract infections. They usually start when you become sexually active. 50% of women will get al least 1 UTI and 25% will get recurrent UTIs. You had a structural work-up so this is not a stone, obstruction, tumor or other problem. This is a biochemical susceptability to infections. We do treat patients with a daily dose of an antibiotic at night to block the infections from occuring to break the cycle. When you have symptoms, but the urine is not infected it could be another disorder called interstitial cystitis. The symptoms of IC are pain/pressure/burning/discomfort/, urinary urgency and frequency, with a clear urine. Plenty of patients have both disorders so it can sometimes be tricky to diagnose. A urine with a strong amonia smell may be simply a concentrated dark looking urine that is not infected, but you simply haven't had a lot to drink or lost water thru sweating. You need to drink more water to clear it up, and a urine analysis would help rule out infection and check the concentration. The strong smelling urine is not a symptom of IC, but could make patients with IC worse. You need to work with a Urologist experienced in IC to sort these issues and get a correct diagnosis. Good Luck,