No reaction to pregnancy may be caused by the short time of pregnancy, etc. In general, it is a normal phenomenon, regular pregnancy tests can be done without much worry. Common reasons 1, the short time of pregnancy: when the menopause is short, the secretion of human chorionic gonadotropin in the body may still be in a relatively small state, so the current gastrointestinal stimulation is light, there will be no obvious vomiting, loss of appetite and other gastrointestinal discomfort symptoms; 2, good physique: common in young women, because of good physique, so after pregnancy, when the embryo growth and estrogen progesterone changes and other stimulation is less affected, so it will not cause obvious early pregnancy reaction. The effect is less when the embryo grows and the stimulation of estrogen and progesterone changes, so it will not cause obvious early pregnancy reaction. In general, no special treatment is needed, but attention should be paid to the diet and work and rest adjustment during pregnancy. You should pay attention to your diet and avoid overly greasy and spicy foods, such as cream and chili; pay attention to the combination of work and rest, avoid carrying heavy things; get more rest and ensure good sleep quality; exercise properly, such as walking and yoga, and drink more water to prevent constipation; take folic acid as prescribed by the doctor to promote the healthy development of the fetus. If early pregnancy reaction occurs in the later stage, you should pay attention to eating less and drinking more warm water; if vomiting is serious, you can also take vitamin B6 orally under the guidance of professional doctors to relieve the symptoms.