I'm just finishing day two pfunk it's great hearing you doing so well. It sounds like you're detoxing quite a lot with the foul taste which is even effecting your water. Don't force your water intake just drink what you can stomach so to speak. You could try brushing your tongue when you brush your teeth and rinsing your mouth with water excessively then spitting it all back out. That seems to be more effective than anything artificial anyway. Otherwise if you can stick it out you know your body will have accomplished a major clean out there!
I never thought to measure my waist. I hardly bothered with weighing myself at the beginning and only do so now more often to take a bit more of a scientific approach to my fasting. I don't like the idea of knowing even some of what we know about fasting comes from experiments done on animals who have been starved to death so I guess I can do my little bit by making myself an experimental subject.