No, but an Ammendment to abolish abortion nation wide would be because it is up to each individual State to determine.
You really know very little about how the Constitution is amended.
Question: How many states does it take to ratify an amendment? And if this Pro Life Amendment were ratified - IT WOULD BE THE LAW OF THE LAND:
Neither the United States nor any State shall deprive any human being, from the moment of conception, of life without due process of law; nor deny to any human being, from the moment of conception, within its jurisdiction, the equal protection of the laws.