Anxiety about becoming a parent

I have wanted to be a mom since I was very young like that was always my life plan. As I’m getting older and almost married (I’m 25 next month getting married in January) I’m finding myself very scared about the whole birth and post birth experience. I get skeeved out sometimes in medical situations and I’m scared I’ll be a wimp when I’m pregnant and then when I give birth. All I want is to be a mom and have healthy babies but I feel like it’s a new anxiety I have. Plus, I only see negative comments about being pregnant on social media and I just feel like I won’t be able to handle it. Has any one else had this type of anxiety, does it go away?