Healthwise

Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.

Due date

A due date is an estimate of when a pregnant woman will have her baby. It is calculated by taking the first day of her last menstrual period (LMP), adding 7 days, and then counting backward 3 months; or by adding 40 weeks from the first day of the last menstrual period (for women with regular 28-day cycles).

For example, using the first method, if a pregnant woman's last period started on March 20, add 7 days to get March 27 and then subtract 3 months to get a due date of December 27. Using the second method, 40 weeks counted from March 20 is December 25.

Ultrasound is often used to estimate a due date based on the size of the fetus.

The due date is only an estimate of when a woman will deliver. Most women do not give birth on their due date, but they do within 2 weeks before or after.

Due to the threat of the COVID-19 (Coronavirus), we are taking precautionary measures to protect our staff and patients. We are implementing a temporary NO VISITOR policy at this time. Only patients or patients and their guardians will be allowed into the office. Please note, this is not to inconvenience anyone! The virus is a very real threat and it is essential that we stay healthy in order to provide needed care for our patients. If you are sick, we ask that you CALL the office to speak with a nurse before you come in. The nurse will provide specific instructions for you. Please DO NOT enter the office if you are sick (upper respiratory symptoms, fever, cough, or flu like symptoms). We are closely monitoring the situation and will update you as circumstances change. Thank you for your understanding!!