Idk. My baby’s heart rate was really high and my mother-in-law swore up and down that it will be a girl and that she will have another granddaughter (her first was with her other son, not my husband). She believed that nonsense to a point she was giving us a list of girl names. Kept Referring to my bump as a “she”.I told her to Keep an open mind because that was just an old wives tale, but she insisted that I was wrong and that I was going to have a girl. After the Chromosome test, And many ultrasounds later Confirm that it was a boy. She then felt silly afterwards.