Ok I'm nervous...

I started out excited for my first pregnancy but now I'm not so sure...I'm scared of the way things are going to change. I'm scared my boyfriend won't be attracted to me anymore and I already feel pretty unattractive. I'm scared because it's never just going to be about me and him ever again. I'm afraid of being giant and people talking about my stomach or touching it. It already bothers me that I'm not even showing and people keep looking at my stomach! I'm scared my boyfriend won't love me anymore. I'm scared off the pain and I'm scared I won't be a good mother even when everyone tells me I will. I know my fears are irrational and he's tried to tell me otherwise but is it normal to be so afraid of all the changes?