I keep having extreme flank pain, wave after wave, usually after I have been lying down a couple of hours. The pain seems to gradually let up after urination, but begins building up again after Iie down, thereby starting the process all over again. It wakes me up all night a couple of times a week, with sometimes having to go urinate 4 or 5 times to relieve the pain enough to sleep. The pain is generally worse on the left side, and will also hurt worse with a deep breath or sudden movement. It peaks as I urinate then slowly begins to subside. I can't find out anything about this or anything similar. Has this ever happened to someone else? It has been going on for about 6 to 8 months off and on. It is frustrating and I'm trying to avoid the doctors offices especially since I can't find a single site with anything similar.