Advice on sickness and food ?

Today started a very early symptoms I never usually feel until like 6/7 weeks of nauseas and vomiting. I can’t hold down anything food wise. Around two this afternoon I felt nauseous and all day since. I tried to eat left over bbq I had that all came up and then I tried little max and cheese I made my son and that made me projectile vomit thank god my bathroom is close to me. I get hungry and when I eat it just comes back up. I can’t drink water, Diet Coke and anything else and be perfectly fine. Just can’t eat anymore? Tips advice?