i hope you get the answers you need. it sounds like you have all the right appts lined up to get answers.

when my MS sx's 1st started in my leg i could only describe it as an electrical shock type sensation.

my advice as always is to start a medical file on yourself. that means start getting copies of all your test results including mri's. all your subsequent drs will want to see this. it will save them time and save you from duplicating tests.

not all sx's may be MS related. so ruling other illnesses out is also important.
good luck and keep us posted.