I'm sorry you experience this. So do I. So much that I have pulled my flank muscle on my right side. My hands hurt all the time. I wake up so exhausted I call in sick to work and sleep up to 16 hours. This includes the night it happens and that day. I'm dizzy and foggy headed. I feel so alone because I look just fine and I don't think my husband believes me. Reading your story makes me feel less alone. I've told my doctor all about it. It's very random. I don't know what to do.