OK, we can have a pitty party!!! Poor you. I wonder if you had a toxic reaction from doing the cleaning during the week since you sounded like you were already tired before the flush, I hope you had a BM every day.
That fasting is for the birds, I hate it. I had many flushes ruined because by 4 pm I started nibbling. I finally had to change to Dr.Kelley's or Oxypowder 's flush so at least I could have my berries and cream at night.
I have also done a couple of daytime flushes, so at least my fasting was during the night :)
If you want to preclean next time, you can use 1tsp of ES several nights before or use Oxypowder , at least that will empty your intestines beforehand.
So the party is over I hope you have a successful flush and sleep.

Hi:
are you sure your bowels are moving well. Are you compeltely evacuating. from my humble experience, a lot of 'Chronic fatigue syndrome' symptoms are directly connected with bowel not emptying well. I have had these days, and realised I am not evacuating completely.

I have never had experience with P&B shakes. ( Also am hesistant to try it for certain reasons). But a week ago, I tried doing SWF (Salt-Water-Flush) and it worked very well. You can find my post about it. And when intestines are clean, energy levels are higher.

http://www.lifeevents.org/salt-water-cleanse.htm
http://www.cleansingorsurgery.com/saltwaterflush.htm

Try increasing the amount of Salt, if you get bloated by 2 tsp of salt. ( I use 1 tbsp). And once the eliminations start, I start drinking plenty of plain water. I big glass for every elimination. Till I am passing clear liquid.

I am now doing SWFing alternate days and will eventually taper it down to once a week. I noticed that its not habit forming and days when I did not take it, I still had a BM. I learnt that Keeping the intestines clean is very important to have more energy. And of course keep flushing and take those 'stones' out.
good luck.

I've heard that in between flushes our old symptoms,whatever they may be, will return. Since the liver is responsible for the regulation of hormones, I can certainly see why you might be feeling a little down right now. You will be better in a couple of days...I've noticed the same thing myself, although not to the degree that you are describing...Sounds like you're going to have a very successful flush! :D