Heartbeat to slow?

Samii • Pregnant with our rainbow baby 🌈💜 mummy to a beautiful little boy 💙

So I had a midwife appointment at 16 weeks and heard the heartbeat. It was 120-130 bpm, does that seem to slow?. I’m now 18w2d and have a scan in 2 weeks but I can’t help but worry a little 🤷🏻‍♀️