Reasons for being overdue in pregnancy

A due date is an estimate based on the last menstrual period and, when available, early ultrasound measurements. If ovulation occurred later than expected, the pregnancy may seem overdue even when it is not. Some pregnancies also continue beyond the estimated date without a clear problem. A previous overdue pregnancy, a first pregnancy, or differences in cycle timing can affect expectations.

As pregnancy continues, the care team may monitor your health, the baby’s movements, growth, heart rate, and the amount of fluid around the baby. The plan depends on these findings, your medical history, and how far the pregnancy has progressed.

Keep scheduled appointments and contact your maternity unit if movements become less frequent or change noticeably. Ask how your due date was calculated and what monitoring is planned. A [Membrane Sweep](/treatments/pregnancy-and-birth-care/membrane-sweep/) may be offered after discussion. If labour does not begin, [Induction of Labour](/treatments/pregnancy-and-birth-care/induction-of-labour/) is another option that your team may explain.

Contact your maternity unit immediately for reduced or changed baby movements, vaginal bleeding, a gush or ongoing leak of fluid, regular painful contractions, severe headache, vision changes, or sudden swelling. Do not wait for the next appointment when these symptoms occur.

Ask whether your due date is secure, how your baby and placenta will be monitored, when induction would be considered, and what benefits or drawbacks apply to each option. Ask what changes in movement should prompt a call.