How to count how old is your pregnancy

Updated February Overdue baby: what happens if my baby is late? National Childbirth Trust. You and your pregnancy at 1 to 3 weeks. Pregnancy due date calculator. Overdue babies. Show references Hide references. Enter your due date or child's birthday dd 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec yyyy Trying to conceive? We use your information to send you emails, product samples, and promotions on this website and other properties.

We use your health information to make our site even more helpful. Join BabyCenter. Sign up to receive free emails and track your baby's development. Join now. See all in Community. You can rely on the due date suggested by your last menstrual period, but your healthcare provider may schedule one anyway.

Unfortunately, these tests are pretty vague, stating only one to two weeks, two to three weeks or three-plus weeks pregnant. In addition, the tests measure from implantation, not from your LMP. Historically, the first heartbeat and first movement are used to get a sense of how far along you are or the age of the fetus, but these forms of measurement are now considered outdated.

Just four percent. It may have to do with the size of the fetus or the health of the mother. Some women will have one baby early and the next baby late. Start tracking your periods including start date, end date and symptoms before you get pregnant so that you can easily tell how far along you are. You can use a calendar or period tracker app, such as Period Calendar, Flo and Clue, all of which are free on iPhone and Android.

Read more: The most frequently asked questions about fertility, answered When is it safe to announce your pregnancy? You are welcome to continue browsing this site with this browser.

Some features, tools or interaction may not work correctly. There is a total of 1 error s on this form, details are below. Please select your last menstrual period. We can't calculate your due date accurately if the date entered for your last menstrual period is more than 9 months ago or is in the future. First day of your last menstrual period LMP : error: This date is invalid Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30