You can not get pregnant if someone pees in your mouth.
I really hope this isn’t what my mother was thinking about when she used to call me a “potty mouth”
Explanation for why you can not get pregnant by imbibing filtered water straight from the pump:
Urine doesn’t have sperm in it. Without sperm, you can not get pregnant.
Even if urine did have sperm in it you couldn’t get pregnant by drinking it. The stomach is not connected to the uterus. There’s no way for the sperm to get where it needs to go, and even if it did, the sperm would be dead from the stomach acid before it got there.
*I wish I had made this question up, but I didn’t. Someone actually asked.