Hcg levels

Katie • Hubby and I are expecting our first child together in March!
Last night I went to the er for light spotting. They did an ultrasound and I am 5w1d. I could see the gestational sac and yolk sac. Obviously no heartbeat yet. Then, was told my hcg levels are at 17,000. Which is high enough to detect a heartbeat. Any idea if this is ok?