I was feeling a little dizzy so I laid down and was listening to an audio book. It's hard to describe how I started to feel it was as if my body were shutting down. I felt weak but heavy, it was an effort to breath and my thinking was confused. I felt like I had had a couple of drinks on top of the flu . It lasted about 1 1/2 hrs. I fell asleep, woke 3hrs later very tired.Have any of you experienced any thing like this? I do see my GP tomorrow.