6 weeks first US heartbeat 99

Cassandra

Hi there. I had my 1st US today and I’m a little nervous. We were able to hear the heartbeat but it was only at 99. I am exactly 6 weeks today. The nurse said they like it to be at 100 but right now is considered a viable pregnancy and I go back in 2 weeks.

She was able to see the yolk sac and fetal pole.

Anyone else have a similar heartbeat and everything was fine? TIA