Trying to find out the gender of my baby

Nicole • Carried my baby girl for 38 weeks had a csection and got to meet her on 12/23/2015 happy FTM 💜💚💙🎀
Okay lady's I hear if the baby's heart rate is low like 150 it's a boy and higher it's a girl my heart rate for my little one was 150 but I keep getting mixed things about the heart rate. What was the heart rate of your little ones and if you found out the sex did the heart rate go with the sex you expected?? Also has anyone tryed the baking soda test where you use baking soda and your urine to see what your carrying??  Or the needle on thread or your ring on string or on your necklace to tell you the sex??