I am seeing my endo next week to discuss this. I have already spoken to her on the phone about it. As far as I can tell I wasn’t coming down with a cold or other illness, and I have changed my insulin cartridge a couple of times. The thing is, everything was perfectly normal the following day when I was just sitting around at home with nothing particular to do. This has happened maybe four times in the last month or so – just one day of incredibly high readings and then back to normal for the rest of the week. Weird, eh?