Which acupuncture point should NOT be used on a pregnant woman suffering from edema?

The acupuncture point BL-28 (pang guang shu) is located on the bladder meridian and is associated with the bladder organ itself. During pregnancy, certain acupuncture points, particularly those that correspond to organs that regulate or are closely linked with reproductive functions, should be avoided. The bladder is significant in regulating water metabolism, and using this point may have implications that could be harmful or uncomfortable for a pregnant woman experiencing edema.

In contrast, KI-3 (tai xi), SP-9 (yin ling quan), and SP-5 (shang qiu) are associated with different meridians and have different functions that can be beneficial or neutral for a pregnant woman. For example, SP-9 is often used to address dampness in the body, which can help in managing edema. Similarly, the other options focus on supporting kidney function or relieving dampness without directly engaging reproductive functions in a way that could pose risks during pregnancy.