One of the first things God said to Noah after the flood was the first thing He said to the human race after creating us: Be fertile and multiply (Gn 1:28). God concluded His blessing of Noah with the words: Be fertile, then, and multiply (Gn 9:7; see also Gn 1:22).
The Lord has made it very clear that children are a blessing from Him (see Ps 127:3) and should be welcomed (see Mt 18:5). In the new covenant, however, the Lord wants us to multiply not only people but also people who are His disciples (see Mt 28:19). He insists that we bear abundantly the fruit of evangelization, or we will be like a withered, rejected branch, picked up to be thrown in the fire and burnt (Jn 15:6).
Naturally, the Lord wants human beings to be created within the marriage covenant through sexual relations and brought to birth through the mothers suffering in pregnancy and delivery. Supernaturally, the Lord makes us new creations (see Gal 6:15) and gives us new birth (see Jn 3:3, 5) by our covenant relationship with Jesus (see Jn 15:5) and our suffering for love of Him.
Dont be abortifacient or contraceptive. Choose love and life-giving pain. Choose life and be fruitful.