With a normal brain and spine MRI the diagnosis of MS is unlikely. You mentioned you are having headaches. These spells could represent a form of complicated migraine. These are migraine headaches that cause various neurologic symptoms (from numbness and tingling to complete paralysis which occur intermittently). There is no particular test for this, but once other disorders have been excluded a trial of a migraine prophylactic may be reasonable. Other disorders which I think are unlikely, but which need to be evaluated include lupus, other connective tissue disorders, thyroid function, and markers of inflammatory conditions. You should discuss this with your neurologist. Good luck.
You may want to look at two muscle groups that are often overlooked but have profound affects on the body. The SCM (Sternocleidomastoid) muscles and the Trapezius muscles. Both groups of muscles can cause the following symptoms:
Heaviness and or pain in the back of the skull (occipital area)
pins and needles along the face and down the arm
pain deep in the ears and behind the eyes
chest pain/rib discomfort (especially at the serratus)
upper diaphragm fullness/ problems with digestion
sensation of a lump in the throat
and others.....
Find a specialist who has a vast knowledge of the neuromuscular system and bring this sheet with you. Let me know how you respond to treatment if you decide to follow up on this.
Rich