My doctor say he gone off my ultrasound not my lmp does that make since

Yes. If you look back at your stats from Aug you said you had a 4 days period. So you probably ovulated 2 weeks after that, so it would be right on.

Yes a lot of doctor's do that especially if baby is smaller than what it should be with LMP @5babies

Yeah just depends on how the baby is measuring. Usually if the ultrasound is more than a week off they’ll use that.

I ovulated later than expected, so my baby was smaller then what was normal with lmp so they went off of what she was actually measuring and not my lmp

That’s how my doctor doing he say cause I have to ultrasound close together