Looking for hope

My friend is 6 weeks pregnant with her first. She started bleeding lightly last night and it's continued through today. She and her husband went to the doctor and they ordered blood work and a transvaginal ultrasound. The technician wouldn't tell them anything and the Doctor said it might be a miscarriage or it could be something else. They won't know more till the morning. She is really upset. Does anyone have any success stories about simular situations that turned out all right? Or other conditions that you would recommend they check her for? Thanks in advance!