I Noticed During Bowel Movements I Pee More. I'll End

I noticed during bowel movements I pee more. I'll end up peeing during the entire movement and after awhile it can become thick and white, but only if I go for long amounts of time, I've gone in and don't have any stds or infections, but continue to have this symptom and a couple more. My biggest concern is the feeling that I need to urinate doesn't go away during the entire movement, I continue peeing and this happens.