Mild to moderate stomach pain during early pregnancy can be quite common, especially when ultrasound scans and blood reports are normal. In the second month of pregnancy, the body goes through many hormonal and physical changes, and this can sometimes cause pulling, stretching, bloating, gas, constipation, or mild cramps in the lower abdomen, including the left side. The growing uterus and stretching of supporting tissues can also create discomfort. In many women, digestive problems such as acidity, constipation, or gas can cause pain on one side of the abdomen during pregnancy. If the pain is mild, comes and goes, and there is no bleeding or fever, it is usually not dangerous. Drinking enough water, eating small frequent meals, avoiding spicy or oily foods, getting enough rest, and preventing constipation with fiber-rich foods may help reduce the discomfort. However, you should not ignore severe or persistent pain. You should contact your gynecologist immediately if you develop heavy bleeding, severe cramps, fever, vomiting, dizziness, burning while passing urine, shoulder pain, fainting, or worsening abdominal pain, because these symptoms may need urgent medical attention. Since your reports are normal, the pain may be related to normal pregnancy changes, but regular follow-up with your doctor is still important to ensure both your health and the baby's well-being.