5.7 going to bed (an hour later, when I'd been asleep for 10 minutes, dexcom alarmed, it's set to alarm at 3.5, tested my finger & it was 1.8 - seriously? The night before it was 5.7 & I had eaten exactly the same thing for tea & it went up up up over night, but maybe I had been out in the garden too much yesterday? It was a beautiful day. Anyway, I had a glucojuice and went back to sleep), 3.6 waking.