My readings went quite high last night abd just before 11pm, I felt a whoosh in my head, as if I was being thrown to one side. I felt really dizzy and went to bed. My readings were high all during the night, 16 and 15. I felt a bit better this morning but nauseous. I had tea and toast at 9am and tea toast and half a banana at 1pm. I took my usual insulin and tablets. Then at 4pm, from nowhere, I took a hypo 3.6. All in all I feel rotten. What could that whoosh have been? It has happened before a couple of times and it passes over the next day.