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An IVF calculator is useful for calculating a due date after intrauterine insemination (IUI) as well as IVF.
Special Considerations IVF may produce particular concerns about the due date.
For example, if the last menstrual period was May 1 and it is now June 1, the baby was probably conceived around May 14, the gestational age will be 4 weeks, and the due date will be February 4 of the following year.
Calculations for natural conception are not necessarily very precise because of several factors.
For example, if the 3 day embryo transfer occurred on May 1 and the date is now June 1, the gestational age is approximately 6 weeks and the due date is January 19 of the following year.
First, if the pregnancy was unexpected, the woman may not remember the date of her last menstrual period.