A normal pregnancy lasts anywhere between 38 to 40 weeks and it is almost impossible to know the exact date of delivery until the baby is born. However, there are several ways in which pregnancy due date calculator works. It can work based on the first day of the last period or the date of conception. (40 weeks after the first day of last period or 38 weeks after conception to be precise).
Your body releases an egg on your ovulation day and that is when your body is vulnerable to conception. This egg can be fertilized with a healthy sperm within 24 hours. However, a healthy sperm can sustain in the fallopian tube for as long as five days and make you pregnant even if the egg is released after five days of unsafe sex. You get your periods after 14 days of ovulation if the egg is not fertilized with a sperm successfully within the first five days. That means, you are technically two weeks pregnant when you conceive and hence your total pregnancy term is 40 weeks, i.e. 280 days. You can use an online fertility calculator to know more about your ovulation date and hence find out your estimated date of delivery (EDD).
Although only one out of 20 babies are born on the estimated date of delivery, it still gives the parents as well as the doctor a fair idea about the developments the bay must be going through. With the help of regular check-up and scans, the growth of the baby can be monitored on a regular basis and can be compared to the estimated growth according to the weekly growth calendar.
Pregnancy week calculator helps you determine how many weeks pregnant you are in case you cannot recall your last period date or the date of conception. This calculator helps you understand how pregnant you are and what are the developments your baby must be going through at this stage. Along with the weekly calculator, our weekly calendar is a very helpful tool in understanding the growth and development of your foetus with each passing day.