Please help me..im curious..?

i had an ultrasound last week at 28 weeks and 6 days,the placenta was located in the anterior and exhibiting a grade 2 maturity echopattern.its AFI is 12.0cm..is everything normal for a 7months and 6days baby?its BPD is 73.5mm, HC is 267mm, FL is 53.9mm, AC is 263mm, OFD is 94.4mm..please do answer me to ease me..thank you..ill b waiting for the answer..