It is well known that the placenta can migrate. Most placenta previa found on early ultrasound resolves by term. Dr. Allen recommends that we give this as much time as possible to resolve. He will recheck placental location during the late 2nd or early 3rd trimester, although a partial previa may still resolve after that point. He does not recommend advising pelvic rest unless there is bleeding.
Pelvic ultrasound is much better than routine abdominal scan for evaluating placenta location.
Her os was closed and her exam was otherwise normal. Because of concern about ectopic pregnancy, he obtained a quantitative HCG which was 600. 48 hours later, this had increased to only 900. While the patient had no risk factors for an ectopic, she continued to spot and two days later, had substantially more bleeding and pain. There must be no fetal heart motion seen on ultrasound.