Menstruation precursor and early pregnancy distinction

Menstruation precursor and early pregnancy difference is not big, women due to changes in hormone levels, endocrine levels, will appear fatigue, fatigue, and accompanied by a slight breast pain, but before the menstrual symptoms are less. In addition to the above symptoms will also appear small abdominal pain and other symptoms, and early pregnancy women will also appear nausea and vomiting, loss of appetite and other symptoms.