Vomiting second trimester!?

Jessica

I'm 14 weeks and 4 days. I have had severe vomiting a couple times already if I wait too long to eat something. I try to snack while I'm working and eat something every 2-3 hours. It seems to not be enough. I get very nauseous, then I start vomiting. But the vomiting is continuous to the point I have to leave work. Is this because of simply not eating enough or something else? What do you ladies think?