Does the GA (AUA) on the ultrasound reading different that the GA (LMP) what makes the difference in the reading and does the AUA include the 2 weeks prior to conception like the LMP? Or is it completely different. My GA (AUA) is reading 8 weeks 3 days as of last Thursday, and want to know if this includes the 2 weeks cycle before ovulation also or is it exactly the baby is 8 weeks and 3 days only, no two weeks included. Sorry Im a bit confused after seeing it on the print out.