Hi invisible,
You can have sensory symptoms for years and years before anything shows up on MRI. Some people have negative LP's and still have MS. There are no set rules. We are all different in our presentation of symptoms.

This may be all you get, now, later or ever. It take times to get a dx. Just keep a journal of your symptoms, how long they last, and if anything new happens, then call your Neuro. Like if you get numbness or shocks, etc. There are so many symptoms, some have many, others have very little.

You have to treat your symptoms, that's all you can do right now, and wait..