hi my age is 30. i was 65kg and my height is 160cm. now i am 23 week1 day. my scan report shows ; B.P.D-57.4mm 23w 4d, F.L- 40.4mm 23w 0d, and A.C-182mm 23w 1d,EFW-571g. My fetal spine- right side, lie-longitudinal, placenta-posterior, Maturity-grade'0'. cord structutes are seen posterior to the neck. is this normal? pl help me