Soreness in the lower back may be a symptom of early pregnancy, or it may be a precursor to menstruation, and you will have to wait a few days for a checkup to determine if you are pregnant. A few days before the onset of menstruation, there will be soreness in the lower back and abdominal pain, and pre-pregnancy will also appear such symptoms, when the menstrual period delayed for more than a week need to consider the possibility of pregnancy, if the menstrual period as scheduled to prove that there is no pregnancy. It is normal for a woman to conceive within a year of preparing for pregnancy, as long as there are no problems with the body before preparing for pregnancy, there is no need to worry. If you have been preparing for pregnancy for more than a year and are still not pregnant, you need to go to the hospital for a detailed examination and treatment according to the cause. In the clinic, it is recommended that couples should not be overly anxious during the preparation period, or it will also affect the conception rate.