Pus and odor in Urine. General doctor.

A low lying placenta in early pregnancy is quite common. Those who have placenta near the cervical internal os, i.e. moth of the uterus, have a chance of bleeding from vagina. This can happen at sex, strenuous activity, esp lifting weighted objects, straining at stools, etc You need to be on guard and look for vaginal bleeding. If it occurs you should visit the gynecologist and get treated. AS the pregnancy advances the placenta generally moves up and at 9 months it may not lie near the internal os. But these things may not happen in some and these patients who have a low lying placenta after 20 weeks are termed Placenta previa and if it remains low tlll 9 months, it may cause some difficulty, like bleeding, esp before and after delivery.