I started a new sensor on Friday night. It hasn't been terribly accurate, but it's the only one I have (getting new ones in a few days), so I kept it in, because it's better than nothing. It has, though, normally been fairly decent. However, this morning, at around 5:30 or so, I wake up, and it tells me I'm 50. I think, I really don't feel low. So I test my sugars on my monitor, and I'm 288. I w…