I have seen a doctor about sore testis. But yesterday it was hurting again. It lasted 15 mins and went away. Should I be worried? I also masturbat frq

Here are some ... Your clinical pictures strongly suggest the occurrence of intermittent testicular torsion with spontaneous detorsion; in fact, age 16 is within the peak age of such events. So, collect and bring the info about the onset, degree, drurtion, interval, & progress of such pain/ache over time to urologist for analysis, more history, physicals, tests as needed, counseling so to deduce possibility for Rx.