I was also diagnosed without a spinal tap. The doc said that a lot of people don't have positive ones so I shouldn't even bother. One friend said that the best thing to do after one is to rest and not do anything for a while. I think in most cases the symptoms and MRIs are enough for a diagnosis.
I have to say that as a "lurker" and not a frequent poster here, I'm really learning so much from you guys...especially the "veterans". As someone who's totally new to this, I'm so eager to learn as much as I can. So far for me it's "MS lite" so I'm just trying to chill out and not worry so much about what might be around the corner.
I hope everyone is doing well!