Hi Sheree

I typed 'heart rate in early pregnancy' in google. The first website called "Obstetric ultrasound -- a comprehensive guide to ultrasound scans" said the following;
'Fetal heart rate tends to vary with gestational age in the very early parts of pregnancy. Normal heart rate at 6 weeks is around 90-110 beats per minute (bpm) and at 9 weeks is 140-170 bpm. At 5-8 weeks a bradycardia (less than 90 bpm) is associated with a high risk of miscarriage.'

Looks to me like your bub has a normal heartbeat. Congratulations!!! I hope you have a happy and healthy nine months.