That sounds like an awful day, and must have been scary! I'm sorry Bobby!

I wish you had gone to the hospital (but I probably would not have either), so that they could have ruled out medical causes for what happened, or tell you for sure if your weakness was due to the fasting or not...
But I think it was probably due to the fasting, especially if you were also a little dehydrated. Something like that is going to effect you more now than in the past. Any residual weakness from the stroke can get worse under the right circumstances.

How did you feel once you got home, had something to eat, and got some rest? And how do you feel today?

How long has it been since you have been out of PT? Have you still been going for your walks, and if so how do you feel since leaving PT?