MS leg collapse and a burning sensation in viaina

I am recently diagnosed with MS (MRI and spial tap)  and in the last 2 months have had three leg collapse episodes with a very "hot" feeling of burning in my vigina (vagina).  I had trouble catching my breath too and a wave of nausia.  These lasted no more than 5 minutes and after catching my breath, I would be back to my "normal" which with MS for me is walking with a cane.

My question would be, Are leg colapses considered "episodes"?  What is with the vigina (vagina) burning, nausia and pain?  My doctor dismisses the symptoms other than the leg collapse to something other than MS, any info would be appreciated.