Well, let's see.... [spoilersdontworkhere]I've already thought this out, mostly.
I'd look almost exactly as I do now, just, with girl features. Slightly more curvy, a round chest, and obviously vagina. Breast size would be pretty well off, probably in mid to upper C, not sure. [Yes, I am judging that based off of other females, namely mother and sister, and other factors]
I would act mostly like I do now. Perverted, slutty, desperate, and lovesick, while also remaining a psycho aspie writer/lunatic. Honestly, not much would change.
But, I would definitely be mostly straight. As in, I would crave dick. Some partial lesbianness in it, too, but not much. I don't think your body actually says "hey, I like vagina" but more or less "the other gender is definitely better sex" or something to that extent. Oh, and my name would be Natalie. I hope
