Answer - PLACENTA PREVIA
Placenta Previa refers to a situation where the placenta, which should normally grow in the upper part of the uterus, grows in the lowest part instead, thus covering (either partially of totally) the cervical opening. It is indicated by bright red vaginal bleeding in the second to third trimester of pregnancy. The bleeding is usually painless. In pregnancy, a woman can lose up to 40% of the blood volume without any signs of shock; this may explain why the patient has normal vital signs even with blood loss.