In this stage of pregnancy
, changing position of the growing baby is quite normal and you have nothing to worry.
To avoid premature birth
, you sleep in left lateral position, take adequate bed rest
in divided time (8-10 hrs at least), avoid all kind of heavy works, do not douching vagina or insert tampon which may cause infection, avoid sexual intercourse also, take healthy diet with prescribed iron/ calcium/ vitamin tabs and do periodic check up for assessment of the baby well being.
All the best.