I m rarely ill. Suddenly I ve been sick since January. Muscle and joint pain, less energy, gut pain from hell, even when I haven t eaten, sudden terrible constipation, Restoralax, docusate, slightly helpful, nausea, headaches, cold most of the time, except for the occasional sudden way too warm feeling , wake often during the night for no reason. Healthy diet, almost no junk food or processed food, hard to keep weight on, told I m too thin, haven t had menses for 15 months (woohoo!), immunity in the basement suddenly. What could I possibly have?