Once you know for sure that you are expecting, the first few things that will cross your mind are..

What is my due date?
How to calculate the due date?
What is my current week of pregnancy?
How my baby may look like in my womb today?
How much my baby will weigh at the present stage of pregnancy etc..


Keeping all that in mind we have created the week by week pregnancy calendar, which will show you the weekly 3D/4D ultrasound fetus images of your current pregnancy week and also tell you about your baby’s approximate weight gain and how big your baby may be now. It will also calculate your current week of pregnancy and update you on the physical and emotional changes that may be happening with you at this stage of pregnancy.


The Math behind Baby due date calculator

Calculation of expected due date or EDD is not an exact science owing to many uncertainties, an irregular cycle or uncertainty over date of conception being a common example. You may notice that your EDD may differ by a few days from the one your doctor calculated. This is because doctors calculate the due date in days since all the months do not have the same number of days. Most doctors take the first day of your last period or LMP, add 266 days (38 weeks) plus another 14 days (the average period for ovulation and conception is 2 weeks after the first day of the LMP). Early ultrasounds offered during the first three months are considered accurate as babies seem to grow at a similar rate in the early months.

DIY Calculation based on a 28 day cycle:

Take the first day of your LMP e.g. 20th April

Add one year (20th April of the following year)

Subtract 3 months (20th January)

Add 7 days and your EDD will be 27th January

OR

The first day of LMP is April 20, for example.

You add seven days (April 27).

Then add 9 months and you have January 27 as your EDD

Finally, the average menstrual cycle is 28 days. If your cycle is shorter or longer than that you will need to add or subtract the difference. For example, if you have a 35 day cycle you will have to add 7 days to the due date (35 minus 28 equals 7). This will make your due date February 3rd.

Disclaimer: Information contained on this Web site is intended solely to make available general summarized information to the public. It should not be substituted for medical advice. It is your responsibility to consult with your pediatrician and/or health care provider before acting on any advice on this web site. While OEM endeavors to provide up-to-date and accurate information, it is not liable for any advice whatsoever rendered nor is it liable for the completeness or timeliness of any information on this site.