Hi, I Had A Colonoscopy Last Week. Doctor Said Everything

Hi, I had a colonoscopy last week. Doctor said everything went fine. Well, that night I started feeling bloated and could not urinate but had the urge. Sorry, I am a 67 yr old male. I do take medication for constant urination. But after the colonoscopy everything just stop working. So I had to go back to the emergency room. They inserted a drainage tube. When I urinate, there is a small amount of blood clogs in the urine. Is this normal?