After the end of menstruation, there is pain in the right side of the small abdomen, caused by more reasons, as follows: First, when there is a cyst in the right adnexal area, due to environmental factors, stress and even endocrine hormone imbalance, will cause the existence of a cyst on one side of the annex, will stimulate the pelvic vessels, there will be small abdominal pain performance, this time it is recommended to go to the hospital registered gynecological ultrasound examination, to When there is pelvic inflammation, inflammation of the right adnexal area or mixed mass in the right adnexal area, due to inflammation stimulation, there will also be pain in the right small abdomen, this time also need abdominal ultrasound, including gynecological internal examination to To rule out the presence of inflammation in the right adnexal area, anti-inflammatory treatment is needed according to the situation.