Frequent urination means to needs to urinate more often than normal.  A frequent  urinate noticeable at night is called “nocturia”, which cause discomfort in your bladder.

Causes:
• Urinary tract infection (UTI)
• Enlarged prostate in middle-aged and older men
• Swelling and infection of the urethra
• Swelling or discharge of the vulva and vagina
• Nerve related problems
• Drugs or beverages that increase urine production 

Symptoms:
• Pain in your side, lower abdomen 
• Difficulty urinating or emptying your bladder
• A strong urge to urinate
• Loss of bladder control
• Fever