J.D.
try chamomile tea, with my 2nd I was sick the entire time, I drank this tea daily, it was the only thing that somewhat helped, finally the dr had to put me on phenergan 3 times a day because I was unable to hold anything down. the phenergan works, the only tricky part is keeping IT down long enough to reep the benefits! I know it is not very popular to prescribe for pregnance related nausea, but at 4.5 months along, I was still not gaining ANY weight.
If you plan on more kids, don't worry-with my 3rd and 4th pregnancies, I didn't have nearly as many nausea issues :)