It is normal for pregnant women to be cold during the second trimester of pregnancy, mainly because of early pregnancy reactions during this stage. The early pregnancy reaction will cause drowsiness, weakness, and a decrease in resistance, so the pregnant woman may be colder than usual. In this case, you should pay attention to rest and eat lightly. If it is in winter, pay attention to keep warm and prevent colds. In the case of fear of cold, hypothyroidism should also be ruled out. Hypothyroidism is a relatively common endocrine disorder during pregnancy. Pregnant women with hypothyroidism are more likely to experience coldness, weakness and drowsiness. It is recommended to routinely check the thyroid function at eight weeks of pregnancy.