Found out gender, it's a girl and I'm freaking out

So I grew up with two older brothers and pretty much grew up as a tomboy. I didn't become a slut because of my brothers and I was raised pretty religious. I'm not very religious now. I've always thought girls were so mean and nasty and have only kept a few close ones in my life.

I just found out the gender and though I'm happy I'm freaked out that its a girl. I see everything in the media and I'm concerned. How does one raise their daughter in this day n age.