Gestational and Yolk Sac but no Heartbeat

I got my BFP on Dec 21st. Last period was Nov 6th. I didn’t have any symptoms but assumed I might be 6-7 weeks along by my first sonogram on Jan 10th. When they did the sonogram they saw the gestational + yolk sac but no heartbeat yet. Dr said I probably ovulated late and it’s too early to see a heartbeat so they rescheduled me for another sonogram in 2 weeks. Anyone have a similar experience with visible yolk sac and no heartbeat? I know this can be normal with having an ultrasound too early but I’ve been so paranoid during this 2 week wait 😭