The first month of pregnancy belongs to the early stage of pregnancy, most pregnant women may only learn of pregnancy through pregnancy test paper, ultrasound can not yet see the gestational sac, at this time the stomach discomfort, may be physiological reasons, may also be pathological reasons, discomfort symptoms if the short-term aggravation, it is recommended to seek medical attention. I. Physiological: 1. functional indigestion: women in early pregnancy may have large emotional fluctuations, sleep is affected, or recent dietary disorders, resulting in gastrointestinal dysfunction, resulting in uncomfortable stomach performance; 2. embryonic growth performance: after the fertilized egg completes the formation of embryos, embryos gradually grow on the endometrium, at this time the uterus is more sensitive, may appear symptoms of uncomfortable stomach If there are no other abnormalities, close observation and regular maternity checkups can be done, and it can be gradually relieved. Pathological: 1, organic indigestion: such as gastroenteritis, hepatitis, chronic cholecystitis, etc., there may be loss of appetite, abdominal discomfort, it is recommended that the necessary ultrasound examination and blood tests; 2, ectopic pregnancy: 1 month of pregnancy may only be the result of pregnancy test paper, no ultrasound examination or ultrasound examination did not find the pregnancy sac, at this time the stomach discomfort, may be Ectopic pregnancy, it is recommended to closely observe, after 35 days of pregnancy ultrasound examination, to clarify whether there is ectopic pregnancy; 3, pre-eclampsia: 1 month of pregnancy appears uncomfortable stomach, can not exclude the possibility of pre-eclampsia miscarriage, it is recommended to closely observe, pay attention to rest, if the symptoms of discomfort continue not to relieve, there is a tendency to aggravate, and even abdominal pain, vaginal bleeding performance, must promptly seek medical attention, for fetal preservation treatment.