I just don't want to be pregnant anymore!

So I am 5 months currently. And I just feel so emotional. I'm freaking out about becoming a mother. I'm so scared, that I'm going to fuck it up or something. I understand that I can't no longer be pregnant or make that decision, and not that I really would. I love this little baby inside me but I'm also freaking out. I just keep feeling like I don't want it to happen. I don't want a baby to pop out in less than 5 months. Like wtf?! Is anyone else having these thoughts? I just can't believe that I'm going to have a baby. Seems nuts. 
I'm excited but then I'm not. And then I feel bad that I'm not excited because I know so many women would love to have a healthy baby growing inside them and I'm just like God why me?? This pregnancy was unplanned with my current boyfriend. And we both are kinda like wtf? I was on the pill and took plan b to be extra safe. But then found out I was sure enough pregnant. It just doesn't seem real. I feel awful. Like I'm a bad mother already.. 
Please tell me someone else is feeling this way?