Spotting and less symptoms?

Ok so I am 9w4d and I had my first ultrasound 6 days ago. All was good and the baby’s heartbeat was 180bpm. I’ve never had terrible morning sickness but it was happening about every other day from weeks 5 through 7 or so. But for the past almost two weeks I’ve barely had any nausea at all and today I had the tiniest bit of bright red spotting. Should I be worried? Should I call my OB? Or is it nothing to worry about? I’m definitely still tired all the time, peeing constantly, and my boobs are still sore.