Hi.. I had one last Friday. In my case they did find mild colitis and swelling of the colon. I have been scheduled for a colonoscopy in 3 weeks. My prep was 2 days of clear liquids and Ducolax on day 1 and Citrate of Magnisia and ducolax on day 2. I also needed 2 enemas the morning of the test. No matter what prep you do you will have to stay close to the bathroom. It wasn't too severe for me. Lucky me I get to do it all again in a couple of weeks. Good luck with your test. It isn't bad at all.