Pregnancy Date Information
Pregnancy terminology can be confusing. There are two ways of dating pregnancy.
- Gestational Age is the reference traditionally used by medical providers to date pregnancy and refers to how long it has been since the first day of a woman's last menstrual cycle (LMP).
- Fertilization Age refers to how long it's been since conception (the fertilization of the egg by the sperm). Most women ovulate in the middle of their monthly cycle (or approximately 2 weeks before their next period would begin).
Example: 4 weeks from conception = 6 weeks from the LMP
We offer FREE Limited Obstetrical Ultrasounds, which can verify how far along you are.
What's going on inside? See our fetal development page.