Natural Birth

So, it's come time for me to really start thinking about my birth plan and start deciding what is best for me and my child. This is my first baby, and I am 22 years old. My husband and I are so excited for her to come, I truly feel like I can hardly wait another 20 weeks! I've been doing some research into having a natural birth at a birth center; but I am concerned for my baby's health obviously. I keep worrying that I will need an emergency c-section, or that the umbilical cord will be wrapped around her neck. If anyone would like to share their birth story, natural or otherwise, and give me some insight it would be much appreciated!