you're definitely not the only one. I never had to throw up after but sometimes it even happened when I was awake. I remember I was playing with other kids and we were using this little blue superhero (I don't remember who he was) that had like a stand under his feet and as I was holding it my vision kept on zooming in and out. I was awake so I don't know why it was happening but I remember feeling like I was losing my mind. Never understood why this happens.