It is hard to tell and you would need follow up with your dr.

A lot of the symptoms you describe could be related to you thyroid condition. I would definitely ask the dr to run not only the standard TSH but get your T3 and T4 tested as well.

Secondly, have you had any X-rays or testing of any kind on your back? A herniated disc could cause the pain you experienced while getting a massage.

In the meantime, hang in there. For some the road to an MS diagnosis is long. Keep a health journal of both diet, symptoms, and things that trigger symptoms.

Let us know how you are doing and what the out come of your EMG show.