7 Week Scan - Concerning?

Katie

After 4 previous losses, our first IVF transfer was successful and I went today for what I thought was my discharge appointment and initial scan by the fertility clinic before I see my OBGYN. I'm 7 weeks- baby measured 6w5d and heart rate was 106. I thought that sounded okay but they asked me to come back next week. Is that normal? I haven't been able to calm my nerves since I got home. They didn't tell me why they wanted me back.