This prayer could be said as a novena by a wife trying to conceive a child.
A Prayer to St. Gerard for Motherhood
O glorious Saint Gerard, powerful intercessor before God, and wonder worker of our day, I call upon you and seek your help. You who always fulfilled God’s will on earth, help me to do God’s holy will. Intercede with the Giver of life, from whom all parenthood proceeds, that I may conceive and raise children who will please God in this life, and be heirs to the kingdom of heaven. Amen.