I had acupuncture, once a week for a few weeks before my ET. The day of my ET I had a half an hour session before the transfer and then another half an hour afterwards.
I felt very relaxed. My acupuncturist was specialized in fertility and on the day of the transfer she did the treatment at my fertility clinic.
I am not sure what made our transfer work. It could have been many factors but all the embryos we transferred stuck
Good luck.