Awful day. Last few days of menses. My pain was very controlled, and BANG! At 2:30, I woke up with the EXCRUCIATING left side flank pain. Just like that. Gone one second, here the next. Now, my muscles are tightened up trying to control the pain with my heating pad and dilaudid. Awful. Trying to get through. Will update later if I can. I don't know if I will be able to.