If there is a feeling in the lower abdomen that you are going to have your period, there is a clinical possibility that you are pregnant. Because the fertilized egg into the uterine cavity to bed, someone relatively sensitive case, there will be a slight uncomfortable feeling in the lower abdomen, this is a normal phenomenon. It is recommended that if you have not had your period by the time you are due to menstruate, you can take a blood test for HCG to find out if you are pregnant if you have stopped menstruating for about 31-32 days. If the result is positive, it is best to rest properly and pay attention to your diet. You should not eat barley, hawthorn, or seafood after pregnancy to avoid miscarriage. In addition, it is also recommended that if you are pregnant, it is best to have an ultrasound at around 50 days to see if the gestational sac matches the number of days since menopause. However, clinically, if a person has lower abdominal discomfort before menstruation, it is mainly due to pelvic congestion, which can be differentiated by clinical blood HCG test.