You sounds exactely like me. I HAD to know so I could prepare everything! Not knowing would have killed me. lol. Both my babies ended up being the sex I wanted at the time. My first was a boy (found out at 4 months bc he did cooperate) and daughter i found at right at 13wks. Was so happy, and yes, her colors, room and all was pink and brown :)
Oooh I hope I can find out next week. I'll be 13 weeks at the next ultrasound. I thought maybe it would be too early.