Acupuncture

Missy
Does anyone know much about acupuncture? 
I am receiving this treatment for extreame PGP (pelvic pain) I get the needles in the front of my pubic bone. 
I don't really understand how those few needles can help, I have had the treatment once and it really didn't do anything, going again soon and am still open minded about it and am praying it will help, but I just don't know how it will. 
Im 37.4 just to add some context