I think it's still accurate despite including weeks 1-3. We start out at 1 month pregnant, lol, week 4, even though technically, we've only been pregnant for 1 week. Because pregnancy is counted from the first day of your last period, but on the first day you were bleeding from your period 🤷🏿♀️ you spend 3 weeks not being pregnant, lol. So it starts at week 4, then 5, 6, 7, 8, and at 8 you're 2 months pregnant, smh
Somewhat, the first 2 weeks aren’t counted because that’s when the conception accuracy. Hopefully I spelled it right. But it’s almost there. I went by a similar to that one that said the same thing and I was kinda there. I would just push two weeks back on each month.