Twice last week and today, I have eaten exactly the same things, breakfast, snack, lunch, snack, dinner snack - carbs less than 50, cals around 1300. The foods I have eaten are good. Nothing has changed, including exercise.
First day, my sugars were a little high for fasting and after meals. Second time, my readings were lower all round. Today, they are higher again, yet nothing has changed. Eating the day before these three days, wasn't that different and my readings for those days were fine. It's mainly in the morning, I snack on celery and cheese and a cup of mint tea before bed. I'm perplexed .....