Yesterday while I was sitting outside reading, I started having this sharp pain on the upper right side of my head. Soon after I started feeling dizzy and still having that pain at the same time. I was walking and suddenly I felt even more dizzy and unstable, like I was going to fall. I felt better after I ate, although I would feel dizzy again after I laughed. Today I thought I was fine until now. I was combing my hair and then I suddenly felt really dizzy, like everything was swirling around. This only lasted for a second, but now I still feel a little dizzy and that pain in my head is coming back and I feel hot. I also have this feeling that if I close my eyes, I won't be able to open them again and I'll die. Why do I feel like this?