I'm the same way. Everything nauseates me and I have horrible heartburn and feel very full after even a tiny meal. It's like morning sickness all over again. I only get a few weeks each pg w/o feeling crappy so we're used to it by now. Usually we'd just feed me whatever will stay down but we're flat broke now so if I can't make it at home, I can't eat it. (And chances are if I have to smell it cooking I'll throw up) Mom';s been making some of my favorite meals and having me go over there to eat which helps. I find it hard to get enough water in this time too so the first thing I do whenever I move is drink a glass of water, that helps a bit.
Wanted to add: I don't eat meals at all anymore. I snack, every 45 minutes to an hour. I'll have a slice of cheese, a piece of pineapple, one piece of toast, a tiny salad, etc. Very small bites. Frequently, I've found that it helps me hold food down better and I end up getting more in me that way. For example, last night I made my Grandma's chicken wings. When they were done I ate 3 small wings, about an hour later I had a small salad w/cheese. About half hour later I had 2 fresh pineapple slices. An hour after that I had some garlic bread.