What is really good for you and your baby to eat when pregnant?

I just found out I was pregnant and now I'm spazzing because I don't eat anything and I'm worried about the baby's health. I have never eaten a hamburger, or hot dog, or chicken, or any other kind of meat. Besides bacon or pepperoni. And I hate any kind of vegetable so I'm not a vegetarian either. I pretty much survive off anything with bread or cheese. But. Of course I'm willing to change my horrible eating habits for another life. So what is something very nutritious to eat when you're pregnant? Thanks xDDD