Why do I pee when I masturbate

I pee sometimes yellow and white at the same time and sometimes it’s just white sometimes it smells like urine sometimes it doesn’t. It’s so confussing I’ve always wanted to squirt but is it possible to squirt and pee and the same time I feel like the need to push like I’m going to pee sometimes it’s like squirting just white fluid like pee sometimes smells like pee in the towel sometimes it doesn’t. Today first it was yellow and smelled just like pee then when I keep on masturbating it was just white could squirt have a smell mixed with pee sometimes