Suggest Treatment For Excessive Vomiting And Heart Burn

I'm having nausea and vomiting every day for the last two and a half months there's no acid reflux or heart burn and it's not acidic when I throw up its just the undigested food, a lot of nausea when laying my head certain ways on Prilosec and not working making it worse there's no connection of certain foods but I noticed I don't throw up drinks like water soda or teas and fresh fruit