Pregnancy causes tons of weird dreams! I had a dream I was in labor and when I finally got to see my baby I had delivered a litter of kittens. I also have dreams about floods,zombies and dreams about ordering food at my favorite restaurant! Lol
Its best not to let dreams get your hopes up or influence you on any way! Only because of what pregnancy does to your dreams!
But that said there is something to be said for maternal instincts ;)
My first baby dream was a girl and it was so real, after that I kept dreaming boy then a few girl. When I got my ultrasound done it was a girl.