I often experience burning after a flush. The worst was when I mixed my e.s. with mostly grapefruit juice and just a little water. I had bleeding and ALOT of pain. Before and since, I have some burning and discomfort, but no blood. I still put a little grapefruit juice in with the e.s. but only about 20% or so, the rest water. I don't know if this is any help, but I do know how you feel!!