sometimes, but not always
Yes, a baby without vaccine can get chickenpox.
Yes, a baby can get chickenpox from other children.
Yes; you are expending more calories than when you were pregnant (if your baby is exclusively breastfeeding)!
Your baby will get antibodies from breastfeeding throughout the time you are breastfeeding and for 2-3 months after weaning.
the baby can get ruebella
Your baby will stop feeding when it is satisfied.
A baby would heal faster with chickenpox than an adult, in general.
Typically it is not dangerous for a baby to get chickenpox if the baby is otherwise healthy. Incidentally, babies under the age of 12 months who get chickenpox are more likely to get shingles later in life. Talk to your health care provider for information specific to your situation.
Some people have such a mild case of chickenpox that they don't notice being ill. This could result from maternal antibodies (from birth or breastfeeding), previous vaccination, or other unknown factors.
If you had it as a baby, it could be chickenpox: if not enough immunity is built up the first time, then the varciella-zoster virus can strike again, as chickenpox, not shingles.
its not breastfeeding if the baby isn't getting fed, so no, its not possible
It will give your baby food/milk that helps the baby grow up healthy.