Not craving food?

I don't know how far along I am yet. I find out this afternoon. Everything seems to be nauseating to me. I don't want food at all. Yet I have to eat it. Anyone else like this? I've tried soups and cereals. I've tried toasts and sandwiches. The only thing really good to me is fish sticks which aren't good to eat while pregnant. I don't know what to do. Is this normal? What foods should help?