It would be ridiculous to see any contradiction between the gift of fertility she has received from God and the gift of grace received at baptism. Regarding entrance into a church after childbirth, he says she is not to be prohibited. Nor is she to be prohibited from taking Communion at this time. If the woman out of veneration of the Sacrament does not go, she is to be praised, but if she does go to Communion she is not to be judged adversely. She has no sin.
People see sin where there is none.
We all eat when hungry, and without sin in doing so, even though it is through the sin of the first man that we are hungry.