What's wrong with me ?

So I started feeling yucky while I was out earlier. Like as if I were getting a stomach flu or whatever they call it. I hate throwing up. So I took a hot bath rapped in some blanket and fell asleep. I woke up a few hours later and felt like I had to throw up. Like, I seriously am scared of throwing up. But I gagged over the towlet but nothing came out. I start a new job tomorrow & it seems like my stomach calms down for a hour or so but is in pain after. I'm thinking I should go to the emergency room (I'm over dramatic)