Post-term pregnancy is when a pregnant woman has been pregnant for more than 40 weeks without any signs of labor. Post-term pregnancy may seem normal, but in reality it can have a huge impact on the health of the fetus.

normal pregnancy lasts an average of 280 days (about 40 weeks) from the first day of your last menstrual period. However, it is common for the due date to change, and some ultrasounds can be as much as 2 weeks off from the actual due date. Very few women actually give birth on their due date.