I'm having my first colonoscopy and upper GI Monday at 9am, and my doctor's office has ill-prepared me for it. And being as today is Sunday, I have no one to call for answers. Can anyone help?1. I'm doing the HalfLytely prep- what time should I start it at?2. Also, in looking for answers to my HalfLytely question online, I see that a lot of places tell you to stop taking iron pills anywhere from 1 week to 24 hours in advance, which was not mentioned to be in any of the paperwork my doctor sent me (which I only received on New Years Eve). I've also seen a lot of reasons for this- they turn the stools black, they make it harder for the stools to loosen and some out, they effect the lining of the colon... Anyone know what the deal is with this and whether or not they'll still be able to do the colonoscopy? Any help is greatly appreciated!