A little blood coming from the vagina. postmenopausal?

See your doctor: Bleeding after menopause is cause to see your doctor. While it happens to many women and often has a benign cause, it can also be a sign of something serious. Your doctor may want to do a pelvic ultrasound or an endometrial biopsy to evaluate you. The biopsy is a way to obtain a tiny sample of tissue from inside the uterus to make sure there is nothing abnormal there.