16 weeks pregnant mother

Question: FOETAL BIOMETRY placenta is Anterior grade "I" in maturity . About 4 mm away from OS. Liquor quantity is reduced AFI =9cms BPD=27mm HC 104mm AC 84mm FL 11mm AVG 14WKS 04DAYS EDD 3-6-2018 FW 93 Grams single live intrauterine foetus of average 14 weeks WITH MILD OLIGOHYDRAMNIOS AND LOW LYING PLACENTA.

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Answer: Low-lying placenta, or placenta praevia, is a complication of pregnancy where the placenta that feeds the growing baby is attached to the lower part of the womb near to or covering the cervix. A low lying placenta, by itself, may not require any treatment. If it is early in your pregnancy, before the twentieth week, then there is a good chance that the placenta will shift into an upward position as your uterus expands. If the placenta stays at a low lying position but is not near enough to the cervix to be classified as placenta previa. However there are treatments to prevent the two most common complications of a low lying placenta: bleeding and pre-term labor. To prevent these problems some women are placed on bed rest or limited activity. Especially activities that result in bouncing or jarring of the lower abdomen need to be avoided. Similarly some women need to refrain from sexual intercourse, or the use of rectal suppositories or vaginal douches/suppositories. The degree of restriction depends on whether or not the woman is experiencing any vaginal bleeding or pre-term labor. After the egg fertilises, it travels down your fallopian tube, and gets embedded in your uterus (womb). At exactly this place where the fertilised egg implants in your uterus, your placenta gets formed. Thus, the position where placenta implants and develops may vary from person to person. Anterior placenta, where the placenta is positioned on the front wall of your uterus (womb). Posterior placenta, where the placenta lies on the back wall of your uterus. Fundal position, in which the placenta lies on the top wall of your uterus. IRight or left lateral position, where the placenta is either on the right or left side of your womb.Placenta praevia, when the placenta is partially or fully covering the cervix.
Answer: guys in this which one is baby's heart beat ?and what is Grade I in maturity ? what is BPD ? AC? and OLIGOHYDRAMNIOS ?