Peeing

Ok so after I finished masterbating , I took a shower as usual and as I was in the shower I felt the urge to pee so as I was peeing , the urge went away and it felt like more of a gush , and the liquid wasn’t pee color , it was more of like a brown or a dark color .. I wasn’t sure if it was the shower water mixed with the soap , but I’m not sure why that happened.. any help?