Am i going to be sick?

Earlier this night i started feeling very lightheaded and felt almost a little sick. I had an appetite though and i was eating normally. but ill tell you right now, i have a phobia, and i mean PHOBIA, of vomiting. and im scared that i might tonight. My temperature is 99.5, but that may just be because im freaking myself out. And i also recently god done having mono. What are the chances of me being sick?