37+2 Feeling non stop sick

I’ve already been the Drs/L+D for dehydration and vomiting. I went last Monday and they gave me fluids/zofran/compazine and none of it helped. They got me well enough to finally keep fluids and food down but the nausea has not let up since. It has been over a week, the prescribed zofran isn’t working and I feel like I’m going to vomit every few minutes. Has anyone else had this? Currently 37+2 and desperate for some solutions.