Due date! It's what everyone wants to know from the moment you pee on a stick. When are you due? When can we expect the baby? When will your baby be born? The questions fly at you!
The more important thing to know is how many weeks pregnant you are at any given point in pregnancy. This is how doctors and midwives calculate your pregnancy, rather than months, because it's more accurate. Your baby is growing so rapidly, particularly in the first weeks of pregnancy that a whole week can mean vastly different things when it comes to not only fetal development but also with treatment of various pregnancy issues.
To calculate the number of weeks you are, you simply start with the first day of your last menstrual period, also called LMP. So if the first day of your last period was January 1st, your first week of pregnancy is January 1-7th, though you are 1 week pregnant on January 7th as you complete the week. January 8-14th would be the second week, two weeks pregnant on January 14th. Your doctor or midwife may even count days. So for example, if you were, using the January 1st date, 5 weeks 3 days pregnant would be February 7th. If you were doing an early ultrasound to look for a heartbeat, you may not see much of anything, but wait a week, until after 6 weeks around February 15th and you would see a lot more.
Don't get stressed, there is a really easy tool to use that will tell you each personalized week of your pregnancy, including when you can expect to hear the heartbeat and feel your baby move. Simply put your due date into this calculator: Pregnancy Weeks Calculator It's a good idea to keep that info handy. If someone every asks you have many weeks you are, you can quickly and easily tell them.
If your grandma insists on knowing how many months you are, you can use the calculation to figure that out as well. (You'll see why it's a bit less straight forward than weeks and why clinical personnel dropped it.)
How many weeks are you?
Photo © J. Rauch