Hi, this is my first pregnancy. I've experienced heavy bleeding twice now, and I've been to the emergency unit, where they did some questioning and referred me to the Early Pregnancy Unit (EPU). I've been to the EPU twice, and they've done scans, which showed a heartbeat, but they can't determine the cause of the bleeding. I'm really worried. The bleeding pattern is usually 2 hours of heavy bleeding, followed by a couple of hours of spotting, and then heavy bleeding again. I don't have any pain, which is why they don't think it's a miscarriage. Has anyone else been in a similar situation?