Why just raw? I am an organic eater. I think focusing on the hormone and pesticides intake is more important but Of course raw food is good for the baby! Just make sure to get balance in other places.
I wouldn't recommend it because you maybe cutting out some very important nutrition that your growing baby will need. And you may become vulnerable to some bacteria that maynot be safe for you and your baby. But ask your physician about that before you make that decision.
Personally, I think a raw diet is a lot of hype. Just eat a balanced diet and you'll be fine.