Hi, I went to a theme park yesterday and rode on several rollercoasters with very large twists, turns and drops. I bumped my head slightly during one ride. Yesterday evening I started to feel like I was losing my balance when walking, and my vision became blurred, especially in one eye. I also had double vision when I tried to focus on something up close. Today my vision is a little better and I am not seeing double, although everything is still a bit blurry. I haven t experienced any headaches or nausea, just a slight ache behind my right eye. Should I be worried?