I'm thinking it's a boy...

Ok, well, for so long I've been telling everyone that I'm having a girl, but I'm starting to think it might be a boy!
I figured our first baby would be a girl since both sides of our family seem to produce girls first. Also, some of the wive's tales seemed to point to a girl (the motion of the ring on a string over my stomach, my craving for sweets--although I also crave salty!--the heart rate, etc.), but now I have evidence that it's a boy!
The strongest evidence is that I had my first dream about our baby last week, and it was a boy. (The baby also looked slightly Chinese in my dreams, but we won't worry about that!). Another strong wive's-tale related piece of evidence is that the baby's heart rate has dropped significantly over the last 3 weeks (and according to the old wives a heartbeat below 150bpm is a boy and anything above is a girl!). Our baby has had a heart rate of 148bpm through the whole pregnancy, which I thought was borderline enough to be a boy or a girl, but at my prenatal appt on Friday the heartrate had dropped to 136bpm! Wow!
Plus, my mom says that I've seemed like I'm carrying a boy, if my pregnancy can be compared to hers at all. (And of course she's guessing boy!).
Anyhow, another piece of very strong evidence is that after I dreamed that I was having a boy, and decided that it means I'm having a boy, I felt something "click." It suddenly seemed right! It's funny too how my attitude automatically changed. I went from feeling very overprotective and mushy towards the baby to sort of stoic, and feeling like he'll be a "tough little guy."
Maybe I'm just having a really tough little girl?
Haha, we'll see!