hello, my sister in law is 20wks 2 days pregnant. the usg obstetrics hr scan shows there is single live intrauterine fetus in variable lie. fetal heart beat 136/min EFW :- 334+/-49 gm. internal os is closed cervical length is 3.5 cm liquor is adequate for POG AFI : 12 placenta is situated in the anterior aspec Grade 0 Impression : single live intrauterine fetus of 20 wks 2 days no gross fetal anomalies seen at present scan. what does it all mean ?