When the uterus begins to grow, a pregnant woman experiences discomfort in the lumbar region or lower abdomen. These are common signs of early pregnancy. But sometimes the pain in the lumbar region is quite noticeable, which means that the uterus expands too quickly. And if pain in the lower abdomen is accompanied by bleeding, then the woman needs to urgently go to the doctor - this is a signal of placental abruption or the onset of a miscarriage. Also, dull pains in the lower abdomen are not only signs of early pregnancy, but often cystitis or nephritis. Therefore, if there are no other symptoms of pregnancy, you should be examined by a gynecologist or urologist.