Dana Curry, 21 years old
Congratulations on your pregnancy! Well, good news! Our pregnancy calculator uses standard method used by doctors, to work out how many weeks pregnant you are based on the first day of your last menstrual period, and allows you to adjust the number of days in your menstrual cycle. The pregnancy calculator will also estimate the due date of your baby, and the conception date. The calculations provided dating calculator pregnancy only estimates based on averages and should be treated as such. You should consult an obstetrician if you require a proper diagnosis.
Our pregnancy calculator is a simple tool which helps you work out your approximate due date before you get a more definite answer at your dating scan, which happens when you are around 12 weeks pregnant. Working out how many weeks pregnant you are can be a little confusing. Until your dating scan your pregnancy will be counted from the first day of your LMP last menstrual periodalthough ovulation will generally occur two weeks after your LMP, which is when you technically become pregnant. In simple terms, your due day is the first day of your last period, plus 40 weeks. Your dating calculator pregnancy pregnancy scan happens between 10 weeks and 14 weeks pregnant. It's called the dating scan, and gives you a more accurate due date, based on the size and development of your baby.
Menu Close menu. Back to Your pregnancy and baby guide. Some women's cycles are not exactly 28 days. If your dating calculator pregnancy is shorter or longer than 28 days, please adjust the number below. Adjusted cycle length in days:
Dating calculator pregnancy
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You can calculate how far along you are using our Pregnancy Calculator. Dating a pregnancy can cause confusion, because it can be done in either of two different ways. Pregnancy can be dated from the first day of the last menstrual period or it can be dated from the day of ovulation. In the United States, pregnancy is dated from the first day of the last menstrual period. This is a holdover from a time when much less was understood about conception. No one understood that ovulation was required for conception or when ovulation occurred. However, dating calculator pregnancy women know when their last menstrual period was and it was known that the average pregnancy lasts days 40 weeks from the first day of the last menstrual period. This is just an artifact of the old system. In many other places, the new knowledge has been incorporated into a dating system that starts dating calculator pregnancy conception.
Menu Close menu. Back to Your pregnancy and baby guide. All pregnant women in England are offered an ultrasound scan at around 8 to 14 weeks of pregnancy. This is called the dating scan. It's used to see how far along in your pregnancy you are and check your baby's development. Your midwife dating calculator pregnancy doctor will book you a dating scan appointment. It will usually take place at your local hospital ultrasound department.
dating calculator pregnancy