I am a healthy 23 year old female. I have a concern that something is wrong with me because I am dizzy all the time. When I'm sitting down in class, or at home, or if I'm standing up at work. It's really frustrating because at first I thought maybe it was anxiety, but this is getting ridiculous. I have a hard time paying attention sometimes because I feel dizzy. I randomly fainted about 6 months ago but they didn't find anything, they said it was probably from "stress". Has anyone had this problem? And would it be a good idea to get a brain MRI? I know how expensive they are so I don't know if it's worth it or not.