Congratulations of a successful flush! I too, will be doing my 5-flush tonight. During my previous flushes, I have noticed alot of mucus and fiberous material. (if you did a Colon Cleanse before-hand, you would have seen alot of this stuff). I am excited about doing another cleanse. I really makes you feel great, and rids your body of allergens. I have never felt burning, during a liver flush, but have during a colon/bowel cleanse.