Congratulations!
Several small meals a day, spread out the food! In the morning, keep a drink and something plain (saltines – low salt if you have any blood pressure issues) next to the bed, before you move a lot – nibble! (It doesn’t always work, but it can help.) Eat smart, don’t eat a lot of heavy or greasy things and make sure you are getting proteins in, really, a good balance is best.
@miasmom mentioned Preggie Pop Drops, I’ve heard good things about them, but I never tried them – actually, I’m not sure they were out when I was pregnant the last time. I have a friend that swears by them.
Keep yourself hydrated, too.
Understand that sometimes, there’s nothing on this planet that will make it stop. Don’t fight it – just try to make yourself as comfortable as possible. If you start to get very uncomfortable or concerned with staying so sick – talk to your doctor. There are things they can give you, if it gets really bad.