hi there im sure your colonoscopy will be fine as so many others have tended to be my story was a tad differenythe prep to clear bowels before me nearly killed me with pain and blacked out 8 times it was called picalaxthe enema at the clinic did thhe same at the clinic and even though heavily sedated during the procedure i screamed the whole way through in pain begging him to stop but have not heard of anyone else having so much pain so goodluck i will ask for a general next time