At my last visit the doc said im 9 weeks but in my mind i counted something else, so im a bit confused. How exactly do they decide the week, is it from period or from the scan? Just want to understand na.
They always go by the first day of your last period to start the count. My doctor calculated it this way, and then the dating scan confirmed the exact weeks.
The standard way is using your LMP (Last Menstrual Period) date. It can be confusing because you aren't actually pregnant the first two weeks, but that's how medical science calculates it.
I totally understand how confusing all this calculation can be when you are so excited! They just count from the first day of your last period, so don't worry if it sounds a bit ahead of what you expected.
At my hospital, the staff first calculated it using my last period date, and then verified it with an early ultrasound scan. Always clarify your due date with your gynac during your visits.
Doctors calculate it from the first day of your Last Menstrual Period (LMP), not the day you conceived. Later, they adjust it based on the first ultrasound scan if needed.
