For additional pregnancy tracking tips, try What to Expect: https://www. whattoexpect. com/due-date-calculator/ For pregnancy tracking and pregnancy facts, try Baby Center: https://www. babycenter. com/pregnancy-due-date-calculator For more calculation options and a detailed report, try Your Due Date: http://www. yourduedate. com/

Use the date your most recent period began. Mothers who have had IVF treatments or who are using an ovulation tracking method may know their actual conception date. [2] X Research source

An online calculator can be a great way to estimate your due date early in your pregnancy so that you know what to expect. Later, your doctor can give you a clearer picture about when your baby should arrive.

The date of your last period is typically used instead of your conception date because most women do not know their conception date. Conception can occur 11-21 days after the first day of your last period, and sperm can survive in the body for a few days after intercourse to fertilize an egg. [4] X Research source

Typical pregnancies last about 37-38 weeks but are estimated at 40 since conception usually occurs about two weeks after the date of your last period, which is the date used to estimate the due date. [6] X Research source

Naegele’s rule provides an alternative for calculating your due date that’s easier for some people to do in their head. For example, if your last period began on August 8, then you could count back three months to May 8. If you add seven days, you’d get May 15. Your due date would then be next May 15.

Ultrasounds can be done as early as five to six weeks after the mother’s last period. [9] X Research source

For example, you could lift up your shirt to expose just your stomach.

Your doctor may order a transvaginal ultrasound to get a more complete view of the uterus if it’s early in the pregnancy. [13] X Research source They may also order one if you have a high risk pregnancy or if there may be problems with your baby. Your doctor will have you empty your bladder just before the transvaginal ultrasound is performed. [14] X Trustworthy Source Mayo Clinic Educational website from one of the world’s leading hospitals Go to source

Ask your doctor if it’s okay to eat before your ultrasound, as sometimes it’s best to stop eating a few hours before the exam. [15] X Trustworthy Source Mayo Clinic Educational website from one of the world’s leading hospitals Go to source