Worried

I had my first ultrasound Tuesday. According to measurements I was 6 weeks 6 days saw the baby and a heartbeat. I do have a small subchorionic hemorrhage but my doctor said it should resolve on it’s on but the heartbeat was 111 and they were concerned with it that low so I go back in 2 weeks for a repeat scan. But was diagnosed with a threatened miscarriage and told I could lose the baby before my next appointment.. 🙁