absolutely not! I think a Mother's Group is an important part of a new mother's life to remind her that she is not the only one going through things, but i don't think it would have much of an effect on the baby. If you want your toddler to start being involved with other kids maybe look into going to a Playgroup? Don't feel bad about not going to Mother's Group, I didn't go to one and my son is a very happy sociable child