You may have released some stones further back in the liver that are larger than you are used to feeling. I have done 28 flushes since Feb. 2001 and have had a couple that required me to flush again in just a couple of days.
I would also suggest taking some herbals to combat the probable infection you have. I have been doing this for some time now and the benifit has been VERY significant. Here is what I am taking: Olive leaf, Grapefruit Seed Extract, Oregano Oil, Garlic and Colliodal Silver. If you want to start somewhat more slowly, I would pick two...Garlic (aged premium-take 4-8 capsules per day) and Grapefruit Seed Extract (Nutribiotic is a good brand. Again 4-8 capsules per day).
So, do the flush again right away. It is OK. I have done them as close as two days apart. Make sure you follow Dr. Clarks protocol. Did you do the parasite cleans before you did the flush? Dr. Clark says this is very important. If not, do the Liver Flush again, then if you feel better, do the parasite cleans then restart your Liver flushes.