Placenta previa at 16 weeks requires regular checkups to observe the position of the placenta. 1. Regular checkups: Observe the health of the mother and fetus through regular checkups. If the placenta is still low after 28 weeks of pregnancy, it is placenta praevia, and you need to be alert to hemorrhage during delivery. 2. Avoid strenuous exercise: Placenta previa must avoid strenuous exercise. It is recommended to rest in bed, do not squat or stand for a long time, do not do heavy work, do not have coitus, and if there is bleeding, you need to consult a doctor immediately. Therefore, if you are 16 weeks pregnant with a placenta previa, you must pay extra attention to it, and if there is bleeding, you must go to the hospital in time, and under the guidance of the doctor to take the appropriate method of treatment.