To lower your risk of getting a bladder infection:
Urinate regularly and empty your bladder completely.
Wear cotton underwear and loose, nonbinding clothing that does not trap heat and moisture.
In general, practice good hygiene.
Drink plenty of liquids. Cranberry juice may be helpful in preventing a bladder infection, according to some studies. It may keep bacteria from attaching to the bladder and creating an infection.
Avoid substances known to irritate the bladder, such as alcohol...