Council of Elvira (c. 305)
Canon 68: If a catechumen should conceive by an adulterer, and should procure the death of the child, she can be baptized only at the end of her life.
Council of Ancyra (314)
Canon 21: Women who prostitute themselves, and who kill the child thus begotten, or who try to destroy them when in their wombs, are by ancient law excommunicated to the end of their lives. We, however, have softened their punishment and condemned them to the various appointed degrees of penance for ten years.