I’m dubious.
It has long been known that progesterone can save some at-risk pregnancies. And it is also known that the way MIFEPRISTONE (Mifeprex or RU-486) causes abortions is by blocking progesterone.
You have to get on the progesterone protocol within 48 hours of taking the first abortion pill for the progesterone to work in overriding the mifepristone and maintaining the pregnancy.
Here's the website, with a number of success stories.
This is called "choice". Right?