Preterm and fadfy

It seems like there might be a typo in your message with the word "fadfy." If you meant "fa dafy," "fad" or something else, please clarify. However, "preterm" typically refers to babies born before 37 weeks of pregnancy have been completed. Preterm birth can lead to various health challenges for the infant, including underdeveloped organs and systems. If you need information on preterm birth or something specific related to it, please provide more context, and I'd be happy to help!