Heart rate and Gender

Nicole • 21 yr old mommy to be November 2016!
For those of you who know the gender, what was the heart rate? At 8 weeks, my baby's HR was 175. Now at 16 weeks, it's about 150. I'm interested to see if the theory about HR and gender has proven true. I find out gender June 14th and I'm so anxious to know!! Ppl keep telling me girl but I'm convinced it's a boy.