Can dreams really be a prediction of gender?!

BethRose • Married April 2015, Miscarriage January 2016, beautiful rainbow baby MacKenzie Rose born 1/30/17 🌈🌹💕
I dreamt last night that I had a little 2 or so year old boy that I was telling him he was having a little brother. Wondering if that might mean I'm having a boy?! Odd thing is that I'm pregnant with my first, so weird that there was a 2 year old boy in it too. I have a stepson, but he's 10! Anyhow, just wondering if this might mean I'm having a boy?!