Hunger & Nausea

Every once in a while, when I would forget to eat I would notice that I would become nauseous until I would eat something. Lately, my symptoms have increased. It's like almost every time I get hungry I feel nauseous. I ate an entire dinner last night at about 7:30 pm. It's now 7 am and I'm feeling extremely hungry and nauseous! Is anyone having a similar problem or know the actual source of the problem? Obviously I feel better when I eat, I just don't understand why this occurs.