i'm sorry you're going thru all this.
it can be very concerning.
but, please try to take a deep breath.
it would be very rare to wake up paralyzed or to die from MS, IF that's what you have.

sometimes it can take awhile for MS to be dx'd. it does sound like your dr is doing everything right. try to take one thing at a time.
start keeping a small sx journal with the date and list your sx's. it might be helpful to your dr.

you might even consider a 2nd opinion.
and, start to keep copies of your tests/results. and get copies of your mri's for your records. then, if you see another dr you can bring the info with you.

i hope you feel better soon and get the answers you need.