Hi, I am not an expert but have had two children. I believe that by not eating you are hurting yourself more than your baby. The baby takes what it needs from you, but my understanding is that if you are not putting anything in then it will take what it needs from you, and if you are eating anything the nutrition goes first to the baby and then to you. I hope that you are on a good pre natal vitamin. Also consider drinking ensure or boost. This will provide calories and if you can gulp it down (I can do it w/ one or two long drinks) it isn't too bad. Congrats on your preg. and I hope that both you and the baby will be healthy.
Heather