First of all, I hope that you get healthy soon

2nd, I was the biggest chicken about having an LP done... I did it just few weeks ago and lemme tell you... a paper cut hurts more (given that your neuro knows what he's doing)
3rd, no matter what the results is, by modifying your diet and life style you can control your symptoms. I say this because it worked for me... in the mean time STOP consuming ANY gluten/dairy products!
best of luck,
C