Suggest Treatment For Premature Ejaculation And Penis Enlargement

i started masturbate wen i was only 9 or 10 years old and it lasts for 6 to7 years , i ceased it at the age of 16 to 17 years. now i m 21. my penis and testis shrunks , penis become curved heading downward. i feel pain sometimes in testis and in the area below the testis. i experienciing premature ejaculation , i ejaculate even without touching my penis by someonelse. my testis and penis is not increasing in size. tell me is there any cure for these diseases plz.