7 weeks 4 days

Tiffany • Noah and Luna’s mommy💜💙
So I have a appointment towmorow and I'll be 7 weeks 4 days pregnant I'm a bit worried because last week we went and we saw the baby but no heart beat the doc told me the baby was too small to see or hear it so I'm hoping this time we will hear it I'm just so scared right now is it normal that hear a heart beat at 7 weeks 4 days?