hi my boyfriend has a problem and i want to help him. he told me that when he is masturbating and after the releasing of sperm (cum) his groin feels pain, (for those who do not know where is the groin it is in the upper part before the penis). he said after coming his groin feels pain that he does not want to masturbate anymore. is it abnormal or normal? i feared that he have some problem in his reproductive organ and could lead to a worse problem..please help me. thanks alot