After pregnancy, all hormones in the body change, and estrogen, progesterone and human chorionic gonadotropin increase significantly to ensure the healthy development of the gestational sac, especially the doubling of the value of human chorionic gonadotropin reflects the development of the gestational sac. The secretion of insulin and thyroid hormone also increases, which are normal physiological phenomena and the hormone levels will return to normal after delivery. Changes in hormone levels during pregnancy can cause some uncomfortable symptoms, such as nausea, vomiting, drowsiness, regurgitation, body fatigue and weakness, which are all normal early pregnancy reactions. These are normal early pregnancy reactions. You can regulate them through diet, eat less and more meals, eat light, nutritious and easy to digest, and eat less greasy food, such as hawthorn juice, iced sugar pear, etc. If pregnant women have poor diet, you can drink some appetizing hawthorn juice, etc. These pregnancy reactions will usually gradually reduce or disappear after the third month of pregnancy. Pay attention to regular maternity checkups to observe the development of the fetus at any time, and at the same time, strengthen nutrition to avoid malnutrition affecting the development of the fetus.