freaked out

Don't get me wrong, I've always wanted to me a mother but I'm freaked out. All the changes about my body, the things I can't do or eat, and birth....all freak me out. Like I am terrified about body changes and birth! Almost all of my friends have at least 2 kids and have told me all about the changes and their birthing experiences and well I'm totally creeped out. I know that in the end it's all worth it and so on but do other people feel this way? Im also freaked out about telling our parents, they'll be happy but I don't know it's weird, I'm nervous.