B.B.
I was told, that is is much more rare, for shingles to be contagious and someone to get chicken pox. (even in babies) Sometimes, it does happen. If you have immunity to chicken pox, you baby could have a mild case...because they are still carrying some of your antibodies, from pregnancy. In healthy babies, there are rarely any complications from chicken pox. You can call your Dr. and ask about the exposure. After that, if it looks like your child is developing chicken pox, take him in. Don't worry too much.
You know your baby was exposed, so you can act right away, should they have it.