I did that too. It was one of those trial and error tasks. The test came back saying I was positive for colon cancer. Turns out it was a false positive. I finally gave in and had the real deal. The prep the day before sucked. I will never drink Gatorades ever again. I pooped for 5 hours. OMG...The actual event was over in a jiffy. I went to sleep and had a nice dream about who knows what and then I was awake wondering if they were ever going to start. When I woke up it was over. Nothing of concern was found.