question: I am a bit confused about precum. Does it come from the Cowper s Gland or from somewhere else? Does it initially contain sperm or does it pick up sperm on the way out? Does urine kill sperm? Does it wash sperm out? If a guy ejaculates a few days before he precums, how likely is it that the precum contains sperm (considering that urine may or may not kill sperm, but it washes sperm out of the urinary tract )? If the precum lands on the labia of a woman, not inside the vagin, is it likely for the woman to get pregnant, considering that the guy last ejaculated a few days before he precumed? It would be very appreciated if someone could answer these questions. Thank you very much in advance.