I think it's like everything, works for some not others. I do love accupuncture and its' worked for me for many things. My friend had it when she was overdue and her waters broke during the treatment.
On the other hand I know my Dr treats women with infertility (Nicole Kidman for many years ) and a close friend of mine and neither had quick success. My friend is still not pregnant after a year of treatment, and Nicole was a lot longer. So Im not 100% sure, but I'd say it's better for during pregnancy than trying to get pregnant IYKWIM.

Also for me for preparing for labour I can't say enough about the chiropractic I had. I am certain it was the reason for my 1 hour 54 min labour. I was all straight and my body in a good way, so DD came out fast and easily (bloomin painfully though)!!!!

Good luck and hope the accupuncture works well. It is a great thing and i do believe it has endless benefits xoxoxo