yes, sometimes i also can't stomach the ensure drinks, mainly it is becuase i was on them for a period in my life for like 3 months - kinda sick of them ya know, i fould they are better with some kind of solid food, like toast, rather than drinking them alone. the nausea could be from the antisipation [nerves] from your upcoming exam. i know i get kinda nausious when i go in to see the doc.
my advice: stick to clear fluids, good ol' chicken noodle, or some of those vitaman water drinks they have out there now. better to play it safe than pay dearly later.
if you feel the need to chew - try eating popcicles or ice. that kinda worked for me once.
praying for a good night's sleep and a happy bottom!! :o]
1998: Colitis - removal of colon, temp. ostomy 10 mths.
2000-07: disease free & doing well with j pouch.
2007-09: rectal pain & discomfort, loss of bowl control. diagnosed with Crohns March '09 currently on: Emtec, Azathioprine [Imarun] & Remicade. Med History: steroids, predizone, cipro, loperamide [imodium], gravol, previcid, cholestramine, xylocaine jelly, zinc oxide creme, etc.