If you experience vague pain in the right lower abdomen after pregnancy, you should first pay attention to distinguish whether it is an ectopic pregnancy. If the ectopic pregnancy is in the right fallopian tube, it will cause vague pain in the right lower abdomen, and the pain will gradually increase with time. It may also be accompanied by irregular vaginal bleeding. In the case of intrauterine pregnancy, vague pain in the right lower abdomen is considered to be a gynecological inflammatory infection. If you have adnexitis, ovarian infection or adnexal cysts, you may experience pain in the lower abdomen on the right side. If there is appendicitis, there will also be pain in the right side of the lower abdomen. In this case, ultrasound examination is needed to determine the condition and then take symptomatic treatment. Mild pain does not require treatment, usually try to pay attention to rest, do not overexert yourself.