We provide free limited obstetric ultrasounds to confirm pregnancy.
A conception calculator estimates the day you had sex which led to pregnancy and also due date of arrival of your baby.
Doctors use ultrasound during pregnancy to measure the length of the embryo.
All you need is to know your menstrual cycle days, your due date, or your first day of your last period.
Reddy UM, Abuhamad AZ, Levine D, Saade GR.
First, determine the difference in days between the LMP and ultrasound due dates.