Hm, sounds like you are stirring things up in your liver...physical and emotional toxins. If it's of any comfort to you, I am doing my 9th flush this weekend also, and I too have been experiencing negative symptoms. In general, I have been feeling better since beginning the flushing process, but since the 8th flush, a few weeks ago, I have been having terrible insomnia and poor digestion (two of my many longstanding problems which i am trying to heal with flushing etc). It is very frustrating. Yes, I think it has something to do with whatever is getting pushed forward in the liver, and perhaps just moving an old stone along a duct can reactivate old symptoms, or it could be pushed into a sensitive spot to wait for the next flush...who knows?
Well, again, best wishes to you. I'll be interested to know how you feel after this next flush.