Hi T.J.
I'm no Dr. but what you described to me sound a lot like what happens to me right before I have a cp sz. I'll often have a twitching or muscle spasms around my mouth with a nervous feeling in my stomach this is an aura sz. (simple partial) which then leads into a cp sz. You might want to keep watch and see if you notice this happen again. I hope it never does! You take care and May God Bless You!

Sue

P.S. I ask myself if it's the neurontin causing the problem.