Okay so people are confusing me .. and also my <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">pregnancy app</a> may be a little slow🤦🏽‍♀️!

Anyway , my question is how do you calculate how many weeks you are? Because January 3rd was my first ultrasound I was measuring 7w2d

Which was a Wednesday .. so that means every Monday I turn another week correct? But then my due date on my app. calendar it says my due date is at 40w1d .. 🤨