FYI, I'm IS.
Personally, in my dreams I'm nether.except for three dreams, once male, once female, and once transfemale.
Even more bizarre, is I'm never me in my dreams, even now. It's like I'm watching someone else's dreams. Even the people and places are made up.
Sometimes I'll dream I'm in school. I wonder around, but never see anyone inside or out.
And each dream means a new school.