Terrible Nausea

Does anyone else have constant nausea? Like it lasts all day and never goes away? I'm able to sleep at night but the moment I wake up I'm nauseated all day. The thought and smell of food turns me away. Nothing is helping. I tried eating a few crackers before I got up. It helped but now the idea of crackers gags me. Gingerale used to help a doesn't now. B6 used to help but doesn't now either. Forcing myself to eat every few hours helps but then I gag or feel gross eating stuff. I never actually vomit I just gag then dry heaves. Does anyone know anything that will help? I'm trying to stay away from taking any medications.