Hi and welcome,
One of the problems with a neurological condition like MS is that the majority of it's associated symptoms are also associated with just about every other medical conditions, so you could look up just about any symptom and MS will come up because MS is a condition that effects the central nervous system.
The thyroid hormone influences the autonomic nervous system, and with your time line it's quite likely connected to your hyperthyroid issues if no other cause had been diagnosed as a more likely causation. To be honest you haven't really mentioned anything that would be particularly suggestive of MS and what you have mentioned, are issues that are not typically connected with neurological conditions like MS eg enlarged goiter, hyperthyroidism, blood clots, tumors.....and whilst automatic dysfunction is definitely associated with MS, MS is not the most likely underlying cause (http://www.dysautonomiainternational.org/page.php?ID=150)
It might be worth considering that cardiac symptoms, sensory symptoms (parasthesias) and small-fiber sensory neuropathies have all been associated with thyroid conditions and cold sensation in limbs can be caused by poor circulation in the blood vessels, and if thyroid and blood clots are medical situations you are aware of, it makes more sense to me that the more likely underlying condition is connected to what you already know about....
Hope that helps...........JJ