Acupuncture IS SAFE TO RECEIVE DURING THE FIRST TRIMESTER.
But (there's always a but)... it is important to let your acupuncturist know that you MAY BE pregnant. It is also important to let your acupuncturist know when you are pregnant. Acupuncture is very safe, and it is important that you know there are acupuncture points contraindicated during pregnancy.
It is important that your acupuncturist is aware of these points and you can easily google "acupuncture points contraindicated for pregnancy" to educate yourself as well!
There are also many herbal formulas contraindicated for pregnancy. However, please understand that not all herbal formulas are bad for you while pregnant. Because most herbal products are in fact....food!
Key thing is to always stay in communication with your practitioners.
Good luck and happy motherhood.
There are a few acupuncture points which are classically contraindicated in pregnancy, but any well trained, NCCAOM board certified acupuncturist will be very familiar with points to avoid. To find a board certified acupuncturist near you, go to the "Find a Practitioner" link at NCCAOM.org.