Why does my penis burn when i pee and my testical hurt? i am 19 year old

Likely infected: The penile urethra is accustomed to disposing of urine with a variety of irritating contents, but when/if you acquire an infection it will have discomfort passing urine. Gonorrhea and chlamydia are two of the more well known agents to trigger such pain & they can effect the testis. Other things can also trigger the symptoms. You need to be seen to determine cause/treatment.