In April 2023, both the ACOG and SMFM released their clinical updates regarding the use of progesterone for preterm birth prevention. While 17-OHP is gone, vaginal progesterone remains an option in the appropriate patient, with some slight differences between the opinions from ACOG and SMFM. A new expert commentary from October 2023 in the AJOG -MFM is calling for a reappraisal of those opinions. Is vaginal progesterone for PTB prevention coming back to treat ALL patients with a history of PTB, not just those with a short cervix? That depends on how you look at the data. And, where does cerclage fit in? Listen in for all this...and more.