Hello! I just came back from the ER due to some cramping, no bleeding just off and on cramping. The ultrasound Tec. Told me everything looked good. My pelvic exam was good. I'm 4 weeks 2 days. The doctor comes in and says he couldn't see a sac so diagnosed me with a miscarriage. I have two healthy boys already and have no history of a miscarriage. Could this be false?