In-vitro fertilization or IVF has become one of the most preferred ways of conception for couples struggling with infertility. However, like with any pregnancy, natural or assisted, every parent wants to know about their due date. While your OBGYN will give you a tentative due date, it is entirely up to the baby’s positioning to determine how early or late the baby will be delivered.
An IVF delivery is generally two weeks less than a normal pregnancy. This is because the fertilized embryo is directly transferred into the uterus. Getting rid of the two-week buffer time in between that comes with a natural conception.
If you are looking for a due date calculator for IVF, Prega Junction prides itself on providing you with the most accurate information.
In this Article
How many weeks is an IVF pregnancy?
Typically, many couples are confused about their conception date and tentative due date during IVF calculation. However, whatever the scenario, a typical full-term pregnancy lasts for 40 weeks, which is around 280 days.
In a natural pregnancy, the conception date is the day of the mother’s last period. In the case of an IVF pregnancy, the conception date is generally considered once the embryo transfer is successful.
Even with all the accuracy in the results, the due date is never 100% accurate since everyone’s pregnancy progresses differently.
Due date Calculation for IVF Transfer
Now that you are on Prega Junction’s IVF due date calculator page, let us walk you through the steps.
Since IVF is an assisted procedure done under a controlled environment, the specialist doing the procedure will know your exact conception date.
- Under the “Date of transfer” in the calculator, enter the conception date as your IVF specialist suggests.
- Under the “Type of transfer,” you need to choose your IVF type. It can be Day 3 or Day 5 embryo transfer, frozen embryo transfer (FET), using own eggs, or using donor’s eggs. You need to pick the option that aligns with your treatment plan.
Here’s a table that can give you a better estimate of the due date based on the type of transfer:
|Type of Transfer||Tentative Due Date|
|3-days FET||Transfer date + 266 days (or 38 weeks)|
|5-days FET||Transfer date + 266 days (or 38 weeks)|
|With own eggs (without ICSI)||Egg retrieval date + 266 days (or 38 weeks)|
|With fresh donor eggs (without ICSI)||Egg retrieval date + 266 days (or 38 weeks)|
|Fresh donor embryo cycle||Egg retrieval date + 266 days (or 38 weeks)|
Is the IVF Due Date Calculator accurate?
As we said, due dates suggested by the OBGYNs or even the online calculators like the one from Prega Junction will show tentative dates. Everyone’s pregnancy comes with many different experiences, including changing due dates. However, the due dates give the parents an estimated window of when their newborn is likely to be delivered.
1-Why are the due dates for a Frozen Embryo Transfer Day 5, Day 6, Day 7 the same?
During days 5,6, or 7, the fertilized embryo divides and multiplies its cells to form a blastocyst. The IVF experts allow this division to ensure that they choose the most potent embryo that will ensure successful implantation in the uterus. Hence, the IVF due date calculator 3-day transfer and the IVF due date calculator 5-day transfer are considered the same.
2-Does the fresh or frozen embryo transfer affect the IVF due date?
The fresh embryo transfer happens when the embryo is transferred into the mother’s womb for implantation after a few days of fertilization. On the other hand, if the mother’s body isn’t optimal for implantation yet, the fertilized embryo is frozen until the time is right. Typically, there will be a difference in the due date between a fresh embryo transfer and FET.