I have no advice. Nothing worked for me. For my first baby, I only felt sick for a few weeks. It helped to eat small meals. But during my 2nd pregnancy, it was horrible! I felt sick the entire time. I even tried sea bands on both wrists out of desperation! I was sick from about a week before my period was supposed to stop all the way through delivery. I even ended up in the hospital at 5 months due to vomitting and pre-term labor. Honestly, the only thing that worked was an occational anti-vomitting pill that the doctor gave. I used those sparingly, since I did not want the medicine to effect the baby.
The good news is that baby and I both survived. Hang in there. You will be ok.