Your instincts are probably right. My period is normally every five weeks, so using the lmp has never been accurate for my babies.
What does it matter since a due date whether its based on lmp or ultrasound is purely an estimate? I say why question the doctor. Most doctors have been doing it for quite some time and can have a very good estimate
I think I'm farther along than 32w+4days I think I'm 34 weeks.
I think im behind i think i really am 24 wks rather than 28
I have two different due dates! Nobody really knows if I'm 23 weeks or 24 weeks. I personally think I'm more of 28 weeks based on symptoms but who knows! Haha