Not feeling hungry for hours

I'm 38 weeks pregnant and I don't feel hungry and i can go for hours without consuming food or water. But I did threw up Acid reflux from time to time. Even if i do eat, I don't feel full or felt there's no food in my stomach to digest. I do have a few headache and body pain(Baby stretching). What can I do to change this? #pleasehelp #1stimemom #firstbaby #advicepls