Question: Hi, which date to be followed either scan gest age date or the lmp gest age date?
Answer: There can be a lot of confusion when discussing the way in which pregnancy is calculated. Since most women do not know when they conceived as it is challenging to know
exactly when ovulation occurred, pregnancy is calculated from the first day of your last menstrual period (LMP).
Counting from your LMP, your pregnancy will last around 40 weeks.
Some women prefer to count their pregnancy from the day that they were likely to be ovulating during the month in which they became pregnant. This will give you an estimated
date of conception, which will usually be about two weeks after the first day of your LMP. So you will be two weeks further along in your pregnancy if it's calculated according to
your LMP rather than your estimate date of conception.