When your period comes and you have stomach pain and back pain, you can take oral painkillers to relieve the pain if you can rule out other conditions causing it, such as aminogest and lofenozide extended-release tablets. In general, there are two possibilities for abdominal pain during menstruation: 1. Simple dysmenorrhea. If it is simple dysmenorrhea, you can take oral pain medication to relieve it; then you can take oral short-acting contraceptives, which can also play a role in relieving dysmenorrhea; there are some Chinese medicines that can also relieve menstrual abdominal pain. 2, mainly consider endometriosis. Dysmenorrhea is a major typical symptom of endometriosis, with abdominal pain right before the menstrual period. This condition can likewise be relieved by oral medication, and in some cases even requires hysterectomy if various medications are ineffective.