Concerned 9 weeks

Yesterday I went to ER because I was bleeding and I passed some small clots. Turned out it’s probably small SCH. The baby was fine and moving with a heartbeat 169 and measuring 8weeks5days (I was 9 weeks yesterday according to previous ultrasounds). But I’m concerned with my hcg levels which are 22880. It seems a bit low. I don’t know if they had results while discharging me from ER. I will follow up with my ob on Monday. Anyone with pretty low hcg levels at 9 weeks? What do you think?