It's known as the dating scan, and is used to give you a more accurate due date, based on the size and development of your baby. Your first pregnancy scan will probably happen when you're between 10 weeks and 14 weeks pregnant. Will my due date change when I have a scan?It may do. Knowing this can help you to be prepared for labour and birth, and to have everything ready for your new baby. are born on their due date! But it is likely that your baby will arrive in the few weeks either side of your estimated due date. Will my baby definitely be born on my due date?Your due date is a best guesstimate, but unfortunately, no one can say for sure exactly when your little one will arrive. If you had a day 3 embryo transfer, count 263 days. If you had a day 5 embryo transfer, count 261 days from your transfer date. If you conceived through IVF, you can calculate your due date using your IVF transfer date. If you’re pretty sure, then add 38 weeks to your date of conception to work out when your baby may be due.
That gives you a six-day window when you might conceive. IVF transfer dateSperm can live in a woman’s body for up to five days, and the ovum (egg) can live for up to 24 hours after being released. The challenge with this method is that getting your date of conception right can be tricky as you won’t necessarily conceive on the day you have sex. Other ways to calculate your due date Conception dateIf you’ve been using an ovulation predictor kit or tracking your cycle using an app then you may be able to calculate your due date using your conception date. Our pregnancy due date calculator uses this information to give you an estimated due date. The average pregnancy lasts between 37 weeks and 42 weeks. Most women ovulate about two weeks after the first day of their period, and conceive shortly afterwards. Health professionals often call this your LMP, or last menstrual period. That's why your baby’s due date is often calculated based on the date of your last menstrual period instead. How we calculate your baby’s due dateEven if you've been tracking your ovulation, there's no way to know for sure exactly when you ovulated and conceived. Have you been trying to work out your baby’s due date and found yourself adding, subtracting, multiplying and counting on your fingers? Working out your due date can be confusing, but luckily, our handy pregnancy due date calculator can help you easily find out when your baby might make an appearance based on the first day of your last period.Īnd we suggest other calculation methods to use, including a due date calculation for IVF pregnancies.
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