I used acupuncture to induce labor. My midwife in my first pregnancy recommended it because I was past my due date. I didn't have to be induced at the hospital, I went into labor on my own.
I was afraid it be nerve wracking and trigger my anxiety if it hurt. It was a lot less invasive than I expected; I could barely feel it.
The best part is how you feel afterwards, I feel really relaxed. After a treatment I'm like "aaaaahh," like a weight has been lifted off my shoulders