report is perfect as per the gestational age
you have mentioned that is 33weeks.
SINGLE CEPHALIC means there is one baby with its head facing down which is the most common and normal position of baby.
33wks 4days gestation implies that your baby's growth corresponds to your period of pregnancy
ACTIVE SOMATIC MOVEMENTS means your baby is well moving inside you which you can appreciate yourself by counting the number of kicks. It also implies that your baby is healthy and fine as when movements decrease otherwise.
FHB of 147 bpm is perfect. (normal range is 120-160 bpm) Its shows the number of times your baby's heart is beating in one minute.
PLACENTA MID ANTERIOR lying is a very normal position of placenta. You need to worry about placental position only when your ultrasound shows it to be low lying.
Normohydramnios means your amniotic fluid
i.e. fluid surrounding the baby is adequate in amount which helps in proper growth and movement of the baby.