Heart Rates were they accurate with what sex you had? Under 140 boy over girl (early stages) I’m 6 weeks. I have a boy and want another and it’s the same as my firsts.
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I’m having a boy and his heart rate has been in the 150-160’s. Heart rate doesn’t really determine gender, just an old wives tale 
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No, my boy had a 173 heart rate at his 8 week ultrasound and 152 at 12 weeks.
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Heartbeat determines nothing when it comes to gender.
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1st-140’s-150-girl
2nd-160-boy
3rd-150-160- girl
4th-140’s-girl
The 1st and 4th didn’t move much, the two middle moved a lot
No, and my doctor told me that the heart rate has nothing to do with gender.