I had a natural birth in my books.

I did have a jab for my placenta, and then so many stitches they stopped counting and an epidural while the Ob with the biggest hands in the world put my hoo ha back together (seemingly from the inside out LOL)

I have always thought of them as things that happened after the birth as such so it depends on your perspective.

DH would say that the most unnatural thing that is associated with DD's birth was the hospital food