Suggest Remedy For Elevated Blood Sugar Level

I have been super stressed for 3 days and craving sweets. Sugar reading was 234 am before eating did not eat anything except coffee and tea with sweet low ate a 3 piece meal capt ds and 2 doughnuts at 2:30 afternoon took nap slept for 3 hrs took sugar reading at 7;45 evening and it is 336. Took 60 units of Novolin n and 1000 metformin and simbaststin. What do I do to lower blood sugar?