There is a possibility of pregnancy because the early pregnancy reaction after pregnancy will make some women experience nausea, morning sickness and other symptoms. Most in the menopause six weeks or so began to appear, usually in the menopause about 12 weeks disappear on their own, if there has been a history of coitus, for the menstruation plain regular women, once the menstruation period, should be considered the possibility of pregnancy. You can test through the early pregnancy test paper, or directly to the regular hospital to check the blood level of human chorionic gonadotropin. If the monitoring is positive, further ultrasound examination is needed to clarify whether the pregnancy is intrauterine. In addition, stomach bloating, nausea and discomfort may also be caused by gastrointestinal dysfunction, it is recommended to go to the regular hospital for examination and symptomatic treatment under the guidance of professional doctors.