Which acupuncture point is the fastest for treating amenorrhea?

There is no basis for the claim that which acupuncture point is the fastest for treating amenorrhea, but you can moxibrate Guan Yuan, Gui Lai point, Shu San Li, and Sanyin Jiao points for treating amenorrhea.
Guanyuan: located in the umbilicus 3 inches below the front center line, has the effect of tonifying the kidneys and warming up the yang, main treatment of blood in the urine, urinary closure, urinary frequency, spermatorrhea, menstrual disorders, menstrual cramps, menorrhagia, amenorrhea and other related diseases.
Returning Point: 4 inches below the navel and 2 inches from the anterior midline, it has the efficacy of activating blood circulation, removing blood stasis and regulating menstruation to alleviate pain, and is the main treatment for abdominal pain, hernia, menstrual irregularities, amenorrhea, metrorrhagia (excessive menstrual flow or spotting), and discharging of bands, and other related disorders.
Foot Sanli: located 3 inches below the calf’s nose and 1 horizontal finger outside the anterior ridge of the tibia, it is effective in tonifying the middle Jiao (treating qi deficiency by tonifying the spleen) and strengthening the spleen and stomach, as well as regulating qi and lowering the rebelliousness, and promoting menstruation and activating blood circulation, and it is used to treat gastric pain, vomiting, choking, abdominal distension, diarrhea, and gynecological conditions such as amenorrhea and menstrual cramps.
Sanyinjiao: Located 3 inches above the tip of the inner ankle, at the posterior margin of the medial border of the tibia, Sanyinjiao has the effect of activating blood circulation and regulating menstruation, benefiting qi and strengthening the spleen, and also has the effect of tonifying the liver and kidneys, and it is the main treatment for gynecological diseases such as intestinal tinnitus, abdominal distention, diarrhea, high blood pressure as well as amenorrhea and dysmenorrhea.
If you need to use acupuncture treatment, you need to be operated by a doctor, do not operate by yourself to avoid adverse consequences.