hello people ... im not getting erections whenever i want .... earlier when i think of masturbating and when i shake my penis , it will become strong and erect .... but now even if i see some porn im not getting proper erection ... i dont know whether i got bored of porn ..... once i was trying to masturbate without erection itself i was able to masturbate ie my penis dint rise , with the normal penis itself sperm came out .... im really afraid ... pls help