I'm not too concerned about this, but I'm just wondering if anyone has ever experience this before and know what it is caused by. It's probably just stress or not enough sleep, but I've had a few strange pains/feelings in my head. First of all, whenever I get too hot or the room is too bright, I get this weird feeling that I can only describe as a nausea feeling in my head. It feels like that sensation you get when you do a somersault. I've also been having these strange headaches. It feels like there is a lot of pressure in my head and I have a dull pain on one side of my forehead and in the back of my head. My eyes also feel very heavy and when I look up or down, they hurt. And just today, a small spot of blood appeared on my eye, I'm assuming a blood vessel has burst. It's very small, but that has never happened to me before. Does anyone know what could be causing all of this?