What about placenta previa in the middle of pregnancy? Is there any way to rise?

If there is no bleeding in placenta praevia in the second trimester of pregnancy, do not worry too much, usually stay in bed and prohibit sexual life. If there is a small amount of bleeding, hospitalization and fetal heart monitoring are required. If the fetal heart is not obviously abnormal, uterine contraction inhibitors can be used to treat it.