Anyone else scared to give birth?

This is my first pregnancy, and wasn't planned. I'm so exited to be pregnant and to have a baby but I am TOTALLY scared of giving birth. It actually gives me anxiety, should I plan a C section? Or try natural birth? I'm scared about the stretching of natural birth and that I won't heal back to how I was and my fiancée won't want to have sex with me anymore? Is anyone else worried about this or is it just me? Give me some confidence ladies!