Hidden pain on the left side of the stomach during pregnancy may be caused by hormonal changes in the body after pregnancy, caused by ligament relaxation leading to mild abdominal pain, as the fetus grows, the uterus increases the pain caused by pulling. Strenuous activities during pregnancy can also cause abdominal pain, simple abdominal pain is not accompanied by bleeding and other conditions generally do not have to worry about, regular ultrasound examination, as long as the normal development of the fetus can be. If the abdominal pain is accompanied by bleeding, consider the aura of miscarriage, can be taken under the guidance of the doctor to protect the fetus; if the diet will cause gastrointestinal discomfort caused by pain; pelvic inflammatory disease, appendicitis, etc. can cause abdominal pain, it is best to be treated according to the specific circumstances. Usually pay attention to a light diet, easy to digest, pay attention to abdominal warmth to avoid cold, so as not to aggravate abdominal pain. If it is pelvic inflammatory disease, it is best to take antibiotics reasonably, appendicitis can also be treated with antibiotics to control the development of the disease.