I'm a bit confused about how pregnancy weeks are calculated. My last period was a while ago, and I'm trying to understand how doctors count the weeks from that date.
My mother used to count by months, but my gynac explained that medical science always counts in weeks. It starts from your last period date, so you are actually considered two weeks pregnant even before the baby is conceived!
I used to get so stressed and obsessed with counting the days and weeks, it felt like an exam! Honestly, just remember it starts from the first day of your last period, and try not to let the numbers give you sleepless nights.
When I was staying at my mummy's house, we were also very confused about this. My mother told me it's always from the LMP, which is the last menstrual period, and my doctor confirmed the exact same thing.
They always start counting from the first day of your last period, not from the day you actually conceived. I used a simple pregnancy tracker website to calculate it because counting on calendar gets too confusing.
For IVF pregnancies, they calculate it a bit differently based on your transfer date, which can feel a little confusing. Don't worry too much about the math, your doctor will give you the exact week during your first scan.