St. Jude Medical Center has proudly served Southern California for over five decades, offering compassionate care of the highest quality. Our staff is composed of over 700 physicians who represent nearly every medical specialty – from cancer care to senior services. At our center, we aren’t content with average and always strive to set the new standard in quality.
Use our online physician search to find the right doctor for you.
You can schedule an appointment for a number of services online.
We provide a number of classes & events, click here to see them.
101 E. Valencia Mesa Drive
Fullerton, CA 92835
Located at the St. Jude Centers for Rehabilitation and Wellness, Synergy offers a more focused environment than traditional gyms as well as an innovative array of classes. We offer classes for every intensity level. Learn More >
Take a class at our Synergy Fitness Center.
Learn about the many ways to help us at St. Jude.
Give the gift of time!Click here to learn more.
It is important to estimate your due date so you and your health care provider can schedule proper prenatal care and plan for your baby's birth. Your health care provider uses a method similar to this calculator to give you your due date.
Since your last menstrual period was on , your baby's estimated birth date is .
Franz Naegele, a German obstetrician, came up with the first due date calculations around 1850. He determined that the average length of pregnancy was about 38 weeks (266 days). This is about 40 weeks (280 days) after the first day of a pregnant woman’s last menstrual period. Naegele based his figures on an average menstrual cycle of 28 days, with ovulation on day 14 of the cycle. That meant the egg could not be fertilized until 2 weeks after the first day of the menstrual cycle. He used his data to come up with a calculation for due dates.
Today, most authorities agree that many factors affect a due date. Your health care provider can use ultrasound and other techniques to help estimate your due date.
This calculator is not intended to replace the evaluation of a health care professional.
Find a Physician |
Schedule Appointment |
Physicians Only |