Women who have frequent UTI's may continuously take low doses of antibiotics (the antibiotic can be taken daily, 3 times a week, or immediately after sexual intercourse).
Instead this, you may try to drinking cranberry juice (about 10 ounces [about 300 milliliters] of juice or 2 ounces [about 50 milliliters] of concentrate per day) or taking cranberry pills, because cranberry fruit contains a substance that directly inhibits bacterial attachment to the bladder and because it acidifies the urine (making it a less hospitable environment for bacterial growth).
Sometimes abnormal connection (fistula) between vagina and bladder can lead to frequent UTI's.
Check your sugar blood levels, too!