I am about 6 weeks pregnant. About two weeks ago I started spotting and I went to the doctor. He drew blood and did an ultrasound. My HCG level had doubled in just 2 days and he followed up with an ultrasound a few days later. You could see the baby and the heartbeat but I was having a brown discharge. Before I left the doctor told me that I would see that but he didn't say for how long. I understand that the brown discharge is supposed to be leftover blood. When he did the ultrasound he said my uterus is heart-shaped and inverted and on one side he saw the baby and on the other there was a sack with blood in it. He didn't think it was a twin pregnancy though. Is it possible that it was and that I miscarried on of the babies? Does anyone know how long this discharge will last?