Baby conception based on due date

Take note that this method is based on the 28-day cycle, and should not be used as a replacement for advice by your doctor or midwife.
Normal delivery may happen as early as two weeks prior to or following the estimated due date.
The simple and quick mathematical formula in Naegele's Rule is simply determine your last date of your menstruation period, deduct three months then add seven days and one year to estimate the date of birth or delivery. The normal date of birth is approximately 40 weeks or 280 days from the last menstruation period. The last day of menstruation will not be accurate enough information to tell the due date for the date that needs to be founded will be the date of conception so that you will be able to time your due date perfectly, this information can be obtained from your doctor.
There will be no way to give her the exact due date only by having the date of her last menstrual, I would need her date of conception in order to perform a good estimate on when her due date will be. See more questions like this: 27th of may 2013 was the first day of my last menstral period when is my expected date of delivery.
I figured out my delivery date, but I am still not sure when the actual conception date is. This is because the date of your last menstrual is not the date that you became pregnant, the date that determines your due date will be the date of conception or when the sperm entered your egg successfully. You should be expecting to feel that around the 5th or 6th month, when your baby has become much bigger. Healthcare providers usually add two weeks to your conception date because they count the first day of pregnancy as the first day of your last menstrual period. My last period began on June 19th or June 20th for sure , my doctor says I'm about 12weeks and 4days and my due date is around March 26-27, 2015. Many healthcare providers count the due date as 40 weeks after the first day of your last period.

Hello I don't remember exactly my last menses date tentatively it was on 25th of August 2014. The Naegele's Rule is the standard method used in determining the estimated date of delivery for women who have a normal 28 days menstruation cycle. I am trying to calculate my delivery date, but the charts are confusing, and I keep getting different results. Hello, I don't remember exactly my last menses date tentatively it was on 25th of August 2014.
This is because we assume conception occurred within 14 days after the start of your monthly period. Sometimes this calculation will give you a date that does not actually exist on the calendar, like April 34. However, due date is an estimate of when you will give birth, and not a guarantee that the baby will come on that specific day. 80% of women give birth within 10 days of their due date, and 20% of women deliver earlier or later than 10 days. This is approximately 9 months back from your due date in order to determine the date of conception.
Right now, you are just at the end of your 4th month so you cannot expect to start feeling the baby kick.
Now the problem is when I went to go get my ultrasound somewhere else I was told I'm around 14 weeks pregnant and my new due date might be around March 13, 2015. Many doctors add two weeks to your due date, counting the date of conception as the first day of your last monthly period. If your due date is April 27, 2016 and you had an average 28-day menstrual cycle, you likely conceived between August 1 and August 9.

This would give you an estimated due date of July 17; however, you need to see your doctor to be sure, and the majority of women do not give birth exactly on their dates. If you mean that your last menstrual period was November 16, then you are expected to deliver your baby on August 23.
The equation in Naegele's Rule is simply deduct three months from the date of your last menstruation then add 7 days and 1 year which you'll come up with the date August 23 which greatly contradicts your estimated date of birth July 16.
Knowing your due date will help the would-be mother to plan ahead, but it should not be expected to be exact.
Ask your doctors if they are going by the date of the ultrasound, or if they are adding days according to your last period. However, you may also deliver on an earlier or later date, depending on many factors, including, but not limited to the number of times you've been pregnant and reached full-term pregnancy, whether there are any complications, etc.
Since February falls in the first three months of the year there is no need for you to add 1 year: your expected date of delivery is November 16, 2013.
In regards to your query, if you get pregnant on the 16th of November and you have a normal 28 days menstruation cycle, your estimated date of birth will be on August 23 following the Naegele's Rule. Although your menstruation period can take 3 - 5 days on average, the date you want to know is the first day.

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