Early pregnancy chest tightness and shortness of breath with a feeling of pressure in the chest may be hormonal changes, pregnancy vomiting, emotional factors, anemia and so on. 1. Hormonal changes: after pregnancy due to the formation of embryonic chorionic villi, will prompt the chorionic gonadotropin secretion, which leads to a variety of uncomfortable reactions, such as nausea and vomiting, chest tightness and dizziness, palpitations and shortness of breath and so on. 2. pregnancy vomiting: early pregnancy panic, shortness of breath, chest tightness may be related to severe pregnancy reaction, because in the vomiting pregnant women are unable to eat normally, which will easily lead to dehydration and electrolyte disorders, resulting in chest tightness and shortness of breath chest pressure. 3. Emotional factors: after pregnancy, many women will feel nervous and anxious because of the pregnancy reaction, which will also affect the normal heartbeat, thus causing panic and shortness of breath. 4. Anemia: If a woman was already suffering from anemia before pregnancy, the condition will worsen after pregnancy, or the dietary nutritional deficiencies during pregnancy, insufficient intake of iron, which will affect the body’s blood supply and oxygen supply, resulting in panic, shortness of breath, chest tightness. Pregnant women can walk outdoors and breathe fresh air, usually do not be too much mental stress, pay more attention to rest, if there is a previous underlying heart disease, it is recommended to consult a doctor in time to clarify the cause.