My daughter has extreme muscle soreness, pain I her joints and chills. Overnight had night sweats. Also worked out at the gym 2 days ago, and is in good shape but this workout seemed to be too much for her. Also has had upset stomach and had very loose bowel movements.
Dear sir/ madam based on your description joint pains' muscle soreness might be a systemic reaction to her illness in the gastrointestinal tract. Does she have fever?