I am eighteen years old and female. I have suffered from what seems to be chronic nausea for a number of years now. I always feel like I'm sick and I get carsick very easily, but I do not vomit. My stomach gets into knots at very random times, even if I have eaten.
When I was around fifteen years old, I used to experience chronic headaches as well as the nausea. My headaches always occurred in one general part of my head (lower left) and I'd have reoccurring headaches up to six times a day. I became sort of immune to Advil, and could only take Excedrin for relief of some kind.
About a year ago, while at work, I experienced something very troubling. It was close to the end of my shift and everything was fine, but all of a sudden I became really light headed and dizzy. With that my vision became impaired, to a point where I could only see "half of things." I even tried to read out a total to a customer and could only see half of each number. It was strange, but I did not feel sick. And it had not happened since.
I'm just sort of concerned, but afraid to know if something may be wrong. I was wondering if anyone had input into what this might be?