Anger and rage- is it a boy thing??

Darcy • 31 y/o happily married. Can't have a rainbow w/o a lil rain. 💦🌈 😇mom to 2 Angels &1 rainbow due 3/24/16. IUI/ Clomid
So I'm 16.4 wks and find out gender on Friday but really thinking boy now because I have been soooo angry and not myself. Like maybe I have extra testosterone in me? I am normally so calm and collected and just got so angry in a meeting and road rage on my way home. I have friends who have/had boys say they also got really angry at points too. Is it a boy thing??