I have googled common reasons and none seem to fit. I am not pregnant, hungry, dehydrated. I am not aware of having a heart condition. I have not stood up suddenly. In fact, i am feeling lightheaded sitting down.
It first happened a few days ago. I have been very busy lately, doing a lot of very concentration intensive crafting, and I was sitting, knitting very intensively when my head suddenly lolled, like when you are falling asleep. I thought I was over tired, it was late in the evening. But now it is mid afternoon and my head is lolling.
I do feel very pressurized and miserable, if that makes any difference, but I can assure you I am eating and drinking well and had a good 8 hour sleep last night. Oh, and apart from the weird feeling in my head, I feel perfectly well. Any ideas?