EDD - Estimated Date of Delivery

EDD - Estimated Date of Delivery Expected Arrival Date
Once you have confirmed you are pregnant, your next question will be, "When will my baby be born?"
About 266 days or 38 weeks pass between conception and birth. This is the same as 40 weeks from the start of your last menstrual period (LMP) because ovulation normally happens about two weeks after the start of your LMP. You can work out the approximate date of your baby's arrival with calculations using the first day of your LMP. The estimated date of your baby's delivery (EDD) is therefore at 280 days (40 weeks) from the first day of your last period. The accuracy of this date is dependent on a regular 28-day cycle. If you have a shorter or longer menstrual cycle, your delivery date will probably be earlier or later. If you conceived immediately after coming off the pill it may be difficult to establish a firm date, but it can also be guided by the development of your baby.

Doctors use the EDD when monitoring the baby's development to ensure that there are no problems with the expected rate of growth. Unnecessary intervention can occur if too much emphasis is put on this date and doctors may decide to induce labor if they believe your baby is overdue.

Find the first day of your last period on the chart by looking for the month in bold type on the left hand side. Then look along the line until you find the actual date of your LMP. Below is the date of your estimated date of arrival.

Your Estimated Date of Delivery Chart
January12345678910111213141516171819202122232425262728293031
October89101112131415161718192021222324252627282930311234567

February12345678910111213141516171819202122232425262728   
November8910111213141516171819202122232425262728293012345   

March12345678910111213141516171819202122232425262728293031
December67891011121314151617181920212223242526272829303112345

April123456789101112131415161718192021222324252627282930 
January6789101112131415161718192021222324252627282930311234 

May12345678910111213141516171819202122232425262728293031
February56789101112131415161718192021222324252627281234567

June123456789101112131415161718192021222324252627282930 
March8910111213141516171819202122232425262728293031123456 

July12345678910111213141516171819202122232425262728293031
April7891011121314151617181920212223242526272829301234567

August12345678910111213141516171819202122232425262728293031
May89101112131415161718192021222324252627282930311234567

September123456789101112131415161718192021222324252627282930 
June891011121314151617181920212223242526272829301234567 

October12345678910111213141516171819202122232425262728293031
July89101112131415161718192021222324252627282930311234567

November123456789101112131415161718192021222324252627282930 
August8910111213141516171819202122232425262728293031123456 

December12345678910111213141516171819202122232425262728293031
September7891011121314151617181920212223242526272829301234567