Second time pregnant. And I understand the how and why they calculate due date.

It's the weeks I'm confused about. Again.

So.. I have long cycles between 33 and like 39 days. My LMP brings me to 6 weeks. According to ovulation I am 3 weeks. Uhm that's a big amount of time in pregnancy! Lol

When I am reading on my app about being 6 weeks, it tells you the size and what's happening and how it is growing. Etc.

But shouldn't I be actually reading the 3 week section?

Even if I had a 28 day cycle, and ovulated day 14. Wouldn't you still have to read about two weeks prior? Do I set my app to the ovulation day... but the drs will just go by LMP..

what do I read??