Yay, a girl- i'm having a girl too, less then 10 weeks to go for me !!!!
I was on birth control when I fell pregnant with my first daughter, and I didn't find out I was pregnant 'till I missed the 2nd period, so I was two months pregnant and still taking birth control, drinking and smoking quite heavily.
My daughter turned out fine, she was big and healthy at birth, and is now a healthy and very bright 2 and a half year old. She's way ahead of the kids we know of the same age in speech, counting, problem solving- she knows her alphabet, can count to 25, and is toilet trained. She also has an amazing memory. (i'm not biased or anything am i!!!!) she is also very well behaved and resonable- no behaviour problems at all.
Your little girl will be fine- relax and enjoy the rest of your pregnancy.
You'd better get thinking about names though, you've missed 5 months arguing with your partner time !!!!!!!