You'll be fine, that happens to me often but I'm pretty sure my mind is playing tricks on me. Just eat some safer foods such as toast and bananas and try to get your hand on some mints (I eat tic tacs). It may be from stress since its the last week of school for you. Stress manifests itself in so many different ways, I read somewhere that stress causes over 95% of all pains and illnesses.
P.S. I'm also an emetophobic teen from Vancouver Just noticed that in your location.