3rd Flush after 7 years of not flushing, concerned about results

A Liver Flush is not an instant cure. You might want to read Andreas Moritz book he says don't do just 1 or 2 flushes, it is better not do them at all. I can't remember the reason, I read it 10 years ago.
If you don't feel well drink 1 tbs Epsom Salts (magnesium sulfate), I do it in warm water, and see if you feel better, than in 2-3 weeks do another flush.