Im having a hard time. And I just need to get this out.

I’m 29 years old and officially 7 weeks pregnant; with my first child, and I’ve never been pregnant before. I’m not that far along. I’ve taken 2 at home pregnancy tests (one faint and one positive for sure) I work for a doctors office so as soon as I got a positive home test I went into work and did a blood test. Also positive. I don’t go to the obgyn until November 20th. I’ve told my immediate family and a few friends, same goes for my boyfriend. But I’m having a hard time calling it a...baby. I just can’t do it. I’m so afraid. I’m not 100% sure what I’m afraid of...I’m afraid that I’ll be too happy and something bad will have to happen. I’m afraid I’m going to be a bad mom. I’m afraid I’m going to get so crazy during the next 8 months that I’m going to push my boyfriend away. And if I don’t call it a baby it can’t hurt me and I can’t be sad if I don’t end up with the happy ending. So I call it, IT and thing. I don’t know how to get past this. My mom thinks that once I go to the doctor it will become real and everything will be ok. But what if it doesn’t? I’m happy, I wanted this; so why can’t I come to terms with this...this is real and yet it isn’t...has anyone else gone through this? Did something finally click? Is this common? Because I feel like I’m just being a crazy hormonal pregnant woman sometimes.