In the last few weeks I have noted while masturbating a sharp decrease in semen. I never ejaculated a lot in the first place, but it's gotten to the point where sometimes nothing will come out at all, or maybe one drop that will sometimes be very runny. If I get really turned on I do have an ejaculation that contains semen that looks and feels normal, but it's still less than normal. I'm really starting to get frightened something is wrong or that I might be going sterile. Does anyone have any ideas?
EDIT: I also meant to ask about a rumor I heard. A rumor that if you masturbate too much it will take nutrients from your body to produce more semen, and eventually your body will cease producing sperm after losing too much of this nutrients and you will become sterile. Sounds like a load of crap to me, but does anyone know if there is any truth to it?