Just had my 18 week ultrasound and doc.appt. on Tuesday, turns out we're having another baby boy (have a 1 and a 2 year old, both boys). The heartrate was 160. I really wanted a girl, but was prepared for another boy. Good luck!
With my son it started out fast, then dropped around 20 weeks and stayed around 160's. This one started at 160's at 12 weeks, and just the other day at 16 weeks 4 days was in the 150's. So hard to tell. Usually faster are girls and slower are boys, but 160 is the gray area. My sil has 2 girls though and her last one stayed in the 130's the whole time! Good luck with whatever you are having! I have no guess on mine this time, the last one I just knew was a boy from the start, this one I go back and forth, let us know when you find out, I still have another month. Two girls I work with though are both having boys, the Dr.'s told them at 16 weeks, which is way early, but I'm so jealous. One girl is due 3 days after me and already knows.
According to my OB, the heart rate is a myth. It all depends on the baby's level of activity. Between resting and being active, the heart rate could be 30 apart. Better wait for the 18 week ultrasound.
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