Pregnancy Months Versus Weeks: When Does my Pregnancy Countdown Start?

From the moment you confirm your pregnancy and until delivery, there is so much to look forward to, think about and do. But, there is always time to check your week-by-week fruit and veggie comparisons. It’s fun to get a tangible idea of how big your baby is and help you answer that pressing question, “How far along are you?”

How to confirm your due date

A misnomer about pregnancy is that it lasts nine months. In truth, it is typically longer or shorter until your little one greets the world. Only five percent of babies are born on their planned due date.

Figuring out exactly where you are in your pregnancy can be a bit confusing. When you visit your doctor, they will count 280 days or 40 weeks from the first day of your last menstrual period (LMP) to determine your due date. For those doing the math, that’s ten months. However, it’s not that simple. While the first two weeks are counted as part of your pregnancy, you were not actually pregnant until you ovulated and your egg was fertilized at the end of week two.

Your due date may also change based on your baby’s growth and development. Your doctor will take measurements and shift your due date based on head circumference, crown to rump length and abdominal circumference.

Pregnancy months versus weeks

On average, there are 4.33 weeks in month, but that extra third tends to get lost in the pregnancy shuffle. In fact, when women share how many months pregnant they are, it’s usually more of an estimate. It’s easier to round up or down depending on how close you are to the next milestone month. For this reason, many women share their pregnancy countdown in weeks instead of months because it is more accurate.

If you have questions about labor & delivery in Huron, or if you’d like other information on prenatal care or labor and delivery, call 605-554-1020. You can also call that number to schedule an appointment with one of our doctors. Or request an appointment using our convenient online form.