What is a pregnancy wheel?
This pregnancy wheel is a simple and handy tool used by healthcare professionals and expectant mothers to determine important dates during pregnancy. It consists of a circular chart that will estimate the due date based on the date of the last menstrual period (LMP).
To use the pregnancy wheel, you need to find the date of the first day of your last menstrual period and then rotate the inner wheel to align that date with the corresponding date on the outer edge of the wheel. The wheel will then calculate the probable date of birth or due date.
Pregnancy wheels can also be used to calculate the current gestation by looking at today’s date on the outer wheel and seeing the corresponding number of weeks on the inner wheel.
Calculating due dates after IVF
IVF pregnancies are easy to date as the exact date of conception is known. Turn the inner wheel using the “conception” date as the date you had egg retrieval. After a frozen cycle start with the conception date as the day of transfer and turn the inner circle anti-clockwise a few days depending on the stage of the transfer i.e. five days back for a day 5 transfer, or two days back for a day 2 transfer.
