I'm trying to keep track of my pregnancy week by week, but I'm a little unsure how to calculate it correctly. Is there a simple way to figure out which week I am in based on my last period?
Honestly, don't waste time doing manual math! Just download a good pregnancy tracker app, enter the first day of your last period (LMP), and it will automatically calculate your exact week and daily countdown. It's so convenient and also tells you what size of fruit your baby is each week!
Actually, the calculation starts from the very first day of your last menstrual cycle (LMP). When I stayed at my mother's place, she explained to me that even though conception happens later, this is how doctors calculate the weeks. It helps keep a clear track for all the scans.
I am also trying to understand all this and I get a bit confused. But from what my sister told me, doctors count the weeks from the first day of your last period, even if you weren't actually pregnant then. It feels a bit strange to calculate it like that, but that is the standard way.
It's very simple to calculate yourself. Just mark the start date of your last period on a calendar and count how many weeks have passed till today. For example, if it's been 8 weeks since your last period started, you are 8 weeks pregnant. No need to overcomplicate it!
The standard medical way is to calculate from your Last Menstrual Period (LMP) date. Elders in my house used to calculate by lunar months, but my doctor advised following the weekly calendar based on the LMP. The first dating scan will also give you the most accurate gestational week.