StorkNet is a pregnancy and parenting site that I started in 1996. It has grown and evolved, just like babies do. I'm in my first trimester and have really been nauseated almost constantly. Even the smell of some foods make me ill. I feel sick just reading your question, Tammy.
Morning sickness is NO fun.
The main culprits are spicy foods and greasy foods. Try to drink clear fluids, and dry things like crackers. Seabands have helped a lot of moms too. Also, don't let your stomach get completely empty. That seems to start the swells of nausea rumbling.