Hi Teri- So Sorry For All The Stuff You're Going Thru!!!
Wow, so you have to deal with a bypass, then a stroke, and now this! Now wonder you just want some answers. You definitely must be anxious. I know I would certainly be. You'll have to let us know how it goes as far as the medication thing is concerned. We are all wondering what medication you are supposed to be getting.
Your description of 15-20 minutes of left facial numbness and tingling - did you say if you had a headache with it or not? If it was a migraine I would think it would last a lot longer than minutes, ... migraines usually last hours (mine do). Seizures usually last minutes, not hours.
Since this feels like when you had your stroke, except not down your arm, is it possible you might be having little strokes, despite the aspirin and plavix you are on?
What is your neuro going to do for additional workup? Glenda