If I Get Pregnant in October, When Am I Due?

Due dates for a October 2026 conception

A pregnancy lasts about 266 days (38 weeks) from conception, so a October conception leads to a due date in June or July. The table gives the estimated due date for each possible conception day, and the date a home pregnancy test is usually reliable — about two weeks after conception, around when the next period would be due.

Dates for 2026. In other years the due date is the same or one day different, depending on leap years.

An autumn conception: what it means for you

An October conception usually means a baby due in late June or July, right in midsummer. The end-of-year holidays fall in your first trimester, before many people have shared their news. Late pregnancy in summer heat can be tiring, so plan cool places to rest. Summer babies are among the oldest in their school year in many countries.

Seasons and timing

With conception in October, the first trimester runs until about December, the second trimester covers the months after, and the third trimester begins around April. In the northern hemisphere, that puts the last weeks of pregnancy in spring and the birth in summer (the seasons are reversed in the southern hemisphere). Spring’s milder weather often makes the final weeks more comfortable, though pollen can make hay fever worse for some.

Because most babies arrive between 37 and 42 weeks, a baby conceived in October could be born in the month before or after the due month. Your baby’s birthday is most likely to fall between Jun 3, 2027 and Aug 7, 2027.

Conception dates are estimates

Few people know the exact day they conceived. Conception happens within about a day of ovulation, which can be up to five days after sex. If you know the first day of your last period, the Due Date Calculator is the standard method. For any month at a glance, see the Conception Due Date Chart.