15 weeks pregnant still have vomiting and other pregnancy reaction can be reduced by eating small meals, ensure adequate rest, avoid contact with irritating odors, moderate exercise and other measures to reduce the reaction. For 15 weeks of pregnancy still have early pregnancy reaction of plain should eat less and more meals, plain in between meals add some small snacks, such as nuts, milk, fruit, etc., both supplemental nutrients, the diet should be light and tasty, and avoid fumes and other stimulating odors. In addition, adequate sleep, ensure adequate rest, appropriate exercise, maintain a happy mood and other measures are conducive to reducing pregnancy. Individual differences in pregnancy reaction, about 60% of pregnant women pregnancy reaction can be gradually reduced after 12 weeks, about 10% of pregnant women nausea and vomiting and other early pregnancy reaction can last throughout the pregnancy, for the heavier pregnancy reaction caused by significant weight loss, induced ketoacidosis, or even acidosis should be evaluated by obstetricians to decide whether to hospitalize.