You mentioned surgery, is this due to intestinal obstruction? This diet may not be recommended under such circumstances due to its reliance on high fiber foods that increase the risk for further obstructions. Even if your doctor is not pro-diet, you can rely on him about this risk. At the very least...

If you're still unwell you should probably do the intro diet for a day or two.

If you're out of tylenol and really not feeling well, it probably makes sense to take Advil, as you"ll feel better with it than without. =)

What if it's stringy and separated? And it smells bad. Why would that happen if I followed BTVC directions?

It may be worth it to clarify that there's no unlisted corn syrup. Any certified Kosher for Passover honey should be fine, as any corn derived product would not be allowed to be added.

Is there any truth to the claim that honey may have corn syrup added but not listed?

I've seen a claim that honey often has corn syrup added and the FDA does not require it to be listed. Has this been researched?