This app tells me I’m 6 weeks tomorrow so I have my first ultrasound booked in two days (to check rule out ectopic at 6 weeks like my doctor recommended). All of the posts I see about 6 week ultrasounds don’t explicitly say if the 6 weeks is calculated from the first day of last period (like this app calculates), or should it be 6 weeks from conception (so, essentially another 2 weeks for me as I was <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> pretty closely)? Just wondering if I’ve booked this US too early🤷‍♀️