Due over masturbation i can't get erectyions and my pennis head become numb no erection even i see porn n small pain on tip of penis please help me ?

Masturbation: Masturbation will not cause loss of erections. Maybe you need to lay off for a few days and see if everything returns to normal. You may be worrying yourself for no reason. If it continues, see a urologist.

Rest ; see Urologist: Stop masturbating for 10-14 days, and if no improvement at all, then see a urologist for evaluation and assistance--likely will improve.