So ashamed of my feelings

So tomorrow I will be 37 weeks pregnant... I absolutely love my baby girl more than anything in the world. I have an amazing supportive husband who has been a blessing the whole time. And my mom who has been here for me every step of the way. I am only 18 and this might be my only chance to have a baby due to problems with my uterus. The doctors wanted to do a full hysterectomy when I was 15 but I felt with the awful pains and horrible periods so I could at least have one child of my own. The only problem is..I am terrified of giving birth. I am currently setting in my bathroom floor in just my towel from getting out of my shower and I’m crying. My husband picked up some extra shifts so we can afford for him to take off a week when I have the baby. He has done so much for me and I am so embarrassed about how scared I am. My baby is still breach so there is always a chance of c-section. But I wanted to have her vaginaly. I just had to tell someone how I feel 😔. I don’t think I can do this