6 wk ultrasound - no heartbeat

Nicole
Hi September 2016 mommies. I've been dealing with light spotting on and off for the last 14 days, as a result my doctor had me in for an early 6 week u/s. We saw the gestational sack and yolk sack but no pole or heartbeat, sadly. My hcg levels were 17,500 today. Anyone else been through this that can share results?