Daughter had a 500 cpk level when she had blood tested. Dr doesn't seem too concerned. Last week she did have some weakness in her legs and arms, loose stool and thought maybe it was the flu. No other symptoms. Her arms and legs started feeling much better Sat., 4 days later. This all started on a Tuesday, so hasn't quite been a week? Any ideas? Much appreciated. She was taking the birth control pill Yaz, which she stopped Wed. She is 33She had her gallbladder out last Oct.