The vague pain in the right lower abdomen is not usually a symptom of pregnancy, but in a normal pregnancy, the corresponding symptoms will appear after about 45 days, and due to individual differences, some people will have symptoms earlier and some later. The symptoms are vague pain in the lower abdomen, but not in the right lower abdomen, most of them are located in the middle of the lower abdomen, and the pain will disappear after rest. In addition, if you are pregnant, you may also experience localized breast pain, breast enlargement, nausea, vomiting, anorexia and other symptoms. If there is vague pain in the right lower abdomen alone, it may be caused by inflammation of the right adnexa or endometriosis lesions on the right side. It is best to go to the hospital for appropriate examination, and if you are pregnant, the possibility of ectopic pregnancy should be ruled out for unilateral lower abdominal vague pain.