I went through the same thing in the beginning of my pregnancy I would try everything so I wouldn't throw up but nothing worked ask your doctor to can they give you a medicine called zofran it helps with the nausea I am still taking it every morning and I am 36 weeks it helps
I've been to the hospital 2 times in the past 2 weeks for this they give me nausea med and fluids it goes away for a day or 2 but just comes right back i feel like im dieing but the hospital hasn't really done anything im sorry your going though this i know how you feel.
My sis in law went throughthe same thing. She was finally admitted into the hospital cuz she dehydrated. Afterwards she was given some meds to help she her stomach, which worked great. Maybe you should call your doctor & let them know