heart rate at 109

Ash • mother of 3 boys and 1 girl

I went to the dr today for my first real ultrasound baby is measuring 6 weeks and 1 day (3 days ahead) its heart rate was only at 109 bpm ultrasound tech said its normal bc the heart could've just started beating that itll get stronger and faster as time goes on has anyone else got a reading so low at 6 weeks I dont remember how fast my other childrens hearts were at this time