I had an awful experience of my head spinning so fast that the room was a blurr, and I was nauseated from the fast spinning of the room, I had no balance, so I held on to the wall, and waited for it to pass. But, it kept getting worse, spinning faster and faster, until I thought I would vomit. This lasted for about 10 minutes, and even after the "spinning" eventually got better, I still feel nauseated and weak from it.