The symptoms of lumbar pain in the first 1 to 2 weeks of pregnancy can be physiological and pathological. Physiological is due to the rise in hormone levels, pathological may be the precursor of miscarriage. 1. Physiological: due to the rise in estrogen and progesterone levels in women’s bodies after pregnancy, the hormones stimulate the ligaments of the waist, thus causing lumbar ligaments to become edematous and loose, leading to lumbar pain symptoms, generally very mild symptoms. 2. Pathological: After pregnancy, if the location of the pregnancy bed is abnormal, or biochemical pregnancy, the precursor of miscarriage, habitual abortion, etc., may lead to the symptoms of lumbago. Just pregnant 1~2 weeks back pain, need to go to the hospital in time by the doctor according to the specific circumstances, to develop individualized diagnosis and treatment plan, so as not to delay treatment.