Hi, I m a 28 year old female and have been experiencing fatigue, joint pain and tingling in my lips, arms, legs, fingers and toes. I had a virus a month ago and that s when some of this started. Also had a butterfly rash on my face for a brief time. Have been tested for lyme and had my ANA tested, all negative. Have a MRI scheduled for Sunday to check for MS. Can you think of any other tests I should get?