My boobs make me horny!

So I’ve always been flat chested and since being pregnant (13 weeks), my boobs have doubled. I love it. I finally feel like I look like a woman and not a prepubescent girl (I’m 25) But when I look at them, it makes me horny. That’s good right? Because now I’m confident? Or is that weird? It’s usually when I’m home alone and I look at myself while I’m changing- I then decide to masturbate. Normal? Does your body make you horny?