Why do i have a slow urine stream sometimes but other times its normal? i'm a 19 guy. i'm scared that the cystoscopy i had months ago did something

Why Cystoscopy: It may be normal but we don't know why you had cystoscopy in the past and how long.Cystoscopy itself does not cause any long term complications,At your age if there are no other symptoms like pelvic pain,pain during urination, nocturnal frequency of urination or blood in the urine. Than there is probably nothing wrong with you.but since you had cystoscopy&concerned.Get it checked by your Urologis

Cystoscopy itself...: is unlikely to cause long term problems. Urinary infection, swelling & inflammation, if they do occur, usually do so soon afterwards. Other causes of slow stream in young men include prostatitis, insufficient fluid intake, self-consciousness, STD's, ureteral scarring, kidney stones in the bladder or urethra and some neurological problems. If you're scared, please see the urologist again.