Pregnancy Accupuncture

Hi gals,
Does anyone of u go to Pregnancy Accupuncture? I recently started to go, some doctor told me that during this time, no needle should be put on head i.e right at the center of our skull. But my new Dr. does put it there, can anyone of u share ur experience which one is correct to put or not to put?
Thanks in advance! I am in 3rd trimester