That can come from anxiety. I didn't understand why pretty much every doc I went to said my symptoms were from stress, since I did not think I have any stress whatsoever in my life, but apparently you can without realizing it. Dizziness is a common symptom of anxiety. But if it really really worries you you can see a doc. Every time I do this, I end up feeling better the next day once they prove to me nothing is actually wrong, but it does get spendy if you don't have insurance. But a lot of people have dizziness and nausea as anxiety symptoms.