When pooping sometimes when forcing the poop out and peeing a clear slimy almost semen looking substance ends up comming out of penis.. I have been tested for all kinds of STD's and i do not have any. It doesnt burn when i pee or anything or even hurt. I am on a lot of perscription medications for pain. Dont know why the semen looking pee comes out or anything like that. I drink alot of fluids and have regular bowl movements. what could it be?