my ob had me use emytrol during my pregnancies....it really helped the nausea abate. In fact, it worked so well for me I wanted to name the baby Emytrol. Or Epidural, I was quite fond of both....*g* (My children are relieved that "Kate", "Emily" and "Andrew" won out.)
If you want to try the emytrol, the lemon flavor isn't very pleasant but there is a cherry that's not bad.
Brenda