Hi doc. i am a 16 year old male, lately i've been really urinating freqently. and when i mean frequently, it means that even when i go, i feel like i have to go again. when will the symptoms go away? i am currently on my 3rd day using nitrofurantoin

UTI? More?: Probably a urinary tract infection, even though UTIs are uncommon in males your age. Or maybe not infectious, e.g. interstitial cystitis. Nitrofurantoin is not usually used for UTI in men; may need something stronger, e.g. ciprofloxacin or other antibiotic. UTI in men under 40 often is due to an underlying urinary tract problem, like stone, stricture, etc. See a urologist.