Have you tried seabands? I have been using them and they work great also I have been taking extra B6. Both together seem to help alot. I dont know how early u eat but I hold off till about 0900 and I am able to keep everything down. If I eat before its game over. Good luck!
I had a lot if weight loss initially too and the no vomit pills. I decided not to worry about it unless the doctor mentioned it, and I finally asked too. They said I was doing fine and I had a similar concern about not gaining fast enough, and they have made no mention that I'm behind in any way. I think you'll be okay, just hang in there. I hope your vomiting goes away soon though, it really is the worst.