Can cycle charting help you estimate your due date? Is it equivalent (or superior) to ultrasound dating? Join Lisa in today’s brand new FAMM Research Series episode to learn about a fascinating study that answers this question! Follow this link to view the full show notes page! This episode is sponsored by FAMM, the Fertility Awareness Mastery Mentorship program!  Use this link to join the waiting list!  Today’s episode is also sponsored by the Fertility Awareness Mastery Charting Workbook.  The first fully customizable paper charting workbook of its kind, available in both Fahrenheit and Celsius editions. Click here to grab your copy today! Today’s episode is also sponsored by The Fifth Vital Sign. Grab your copy here.