Hi there.
I understand your concern. Your symptoms presented may indeed be caused by demyelinating conditions such as MS, however, it is very early and unreasonable to jump to conclusions without a formal neurologist consult or the benefit of imaging studies such as MRI. Other causes would include stress, which heighten one's perception of pain. Another possibility is inadequate blood supply or drainage to the painful areas which would need vascular evaluation. I suggest you discuss all of these possibilities when you meet your doctor but for now I also suggest you relax and avoid stress as much as possible (though I know that may not be totally possible). Regards and God bless.