Slow heart rate? Measuring a week early?

Question

Went in for an early ultrasound today hoping it would ease my mind but maybe the opposite! 
I should be 7w2d but they said I was measuring 6w3d (I took ovulation tests so I know when I ovulated). 
And the heart rate was 87 bpm.
The nurse said they hoped for over 100 but American association of preg says 90+. 
Anyone else have something similar? Good or bad outcome?

Answer

My ultrasound was at 6 weeks 2 days and the heart rate was 93 bpm. My doctor wasn’t really concerned and said it usually goes up but scheduled me for another ultrasound to make sure. It’s next Monday. I’m not really worried

Answer

The heartbeat usually starts in the 5th or 6th week of pregnancy. The HB could have just started recently. Only way to know forsure is a second ultrasound to see progression. But considering your not as far along as you thought and took ovulation tests. I'd be cautiously optimistic.

Slow heart rate? Measuring a week early?

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