Hi Vidda :),
Great job again on your fast! Inspirational to be sure and you make it seem easy even while working full time :).
As to the liver flush, from what i have both read and experienced it is not a good idea to do this soon after a fast. The least successful LF i have ever done came about a week after a 10 day fast (if memory serves). I haven't researched into the specific reason, but i don't believe i over-challenged myself digestively (i didn't get sick from it). Something else in the body wasn't ready for this... i suspect it wasn't strong enough just yet to push out the anticipated volume of stones and sludge. To optimize your chances for the best possible results, I would recommend re-feeding for at least 5-6 weeks after a 21 day fast before taking on a liver flush.
All the best,
Mighty Sun.