Would like to know ut opinion

Hiii ladies i would like to know is it okk that on first ultrasound baby measures 6w which is correct according to LMP but during second ultrasound which is just after week it shows 6w 5ds instead 7w 0ds.

My doctor was like ohhh baby exactly measures 7weeks but later when i saw pictures i realize that it says only 6w5ds. Wonder why doctor would lie??

This is my 5 pregnancy....dealing with recurrent miscarriage....m really scared and hoping nothing happens to this baby.