I'm not sure if it's safe to be in Ketosis while pregnant, but you can certainly cut out all sugar and "white" foods from your diet. That can't harm you in any way. It might also prevent you from gaining any more.

I'm sorry that you are in such emotional pain. I've never been pregnant but I know the emotional pain of being overweight.

I hope you find some peace and enjoy the rest of your pregnancy.

Deanna