40 Weeks!

happy smiling pregnant woman lying in bed and touching her belly at home

A Pregnancy Is Divided Into Three Trimesters

Each trimester lasts approximately three months:

The unborn baby spends around 38 weeks in the uterus (womb), but the average length of gestation is calculated as 40 weeks. This is because pregnancy is counted from the first day of the woman’s last period, not the date of conception which generally occurs two weeks later. Since some women are unsure of the date of their last menstruation (perhaps due to period irregularities), a pregnancy is considered full-term if the birth falls between 37 to 42 weeks of estimated last menstrual period. A baby born prior to week 37 is considered premature, while a baby that still hasn’t been born by week 42 is said to be overdue. In many cases, labor will be induced in the case of an overdue baby.

The medical term for the “due date” is Estimated Date of Confinement (EDC):

However, only about 4% of women actually give birth on their EDC. There are many online pregnancy calculators that can tell you when your baby is due, if you type in the date of the first day of your last period.

A simple method to calculate the due date is to add seven days to the date of the first day of your last period, then add nine months. For example, if the first day of your last period was February 1, add seven days (February 8) then add nine months, for a due date of November 8.

Accepted Insurances

May-Grant Obstetrics & Gynecology participates with the following insurances. Please note that office copays are due at the time of service and any co-insurances are the responsibility of the patient. Please check with your carrier or call our office at 717-397-8177 for an updated menu of insurance options.

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Each patient is unique, and so is each appointment type!

Online scheduling is currently for ESTABLISHED May-Grant patients only. If you are a new patient (GYN or OB), please call the office at 717-397-8177 to schedule your appointment to ensure that your provider has enough time to address your needs.

If you schedule an appointment online as a new patient, your appointment will be canceled and you will not be able to be seen. A “New patient” includes those who have not been seen in our offices in the past three years.