I am guessing any rice or noodles in your tea is causing the erratic bloods, I can't sort mine out very well after such a meal so I tend to steer clear of takeaways as far as possible. I hope you are finding things better this morning, I would get yourself into some low carb meals for a few days to try and stabilise things whilst you are feeling poorly. Have you discussed anti depressants with your GP? It is not unusual for patients with epilepsy or who have had strokes to feel this way, my Mum has epilepsy as a result of a stroke and sometimes I think she may be better off with an anti d as she gets very down.
Ali