not getting the gender you wanted?

Keri • "Happiness can be found even in the darkest of times ; if one only remembers to turn on the light"
I am soooooo beyond thrilled that I'm having this little guy but, I wanted a little girl so bad.  I feel like a terrible person for even thinking this stuff. I'm so sad about it and that makes me feel even worse! I know once I see him I'm going to be obsessed and wonder how I ever could've wanted any thing other than him. 
Anyone else feel this way?