Low back pain may occur in early pregnancy. Low back pain appears in early pregnancy is mostly related to the following factors: 1, physical fitness, exertion, diet and so on have a certain relationship, if due to their own poor physical fitness, early pregnancy did not pay attention to, appear overexertion or long time strenuous exercise, low back pain discomfort, consider the possibility of miscarriage, this time it is necessary to recent 3-5 days of detailed observation, if there is unexplained vaginal bleeding symptoms, it is recommended that the gynecology department for If you have unexplained vaginal bleeding symptoms, we suggest you to have a gynecological examination to check the development of the fetus inside the uterus. 2. Early pregnancy, due to hormone secretion regulation, leads to ligament relaxation, uterus enlargement compressing the tissues in the pelvic cavity, body weight shifting backwards, in order to balance the body, the waist convexity, leading to lumbago. This and other conditions are within the normal range and do not need to worry.