I did only one flush. I didn't start to understand this process until I had already had a severe attack. By that time, I had that giant stone, which was blocking the duct. I wish I'd known of all this earlier, and that I'd started flushing earlier.. But it should make you feel better to know, that despite the giant stone, the flush I did caused no pain! If I were you, I'd keep flushing so that you don't end up where I am!
Thanks for saying you think I did the right thing.. I'm kind of doubting myself a bit.. Don't think I had much of a choice..