Pregnancy nose will become bigger, may be related to weight gain, the body hormone level rises and many other factors. 1. Weight gain: after pregnancy, most women will enhance their nutritional supplements and generally gain weight, so more and more fat will make the nose feel bigger. 2. Elevated hormone levels: After pregnancy, some women may experience some changes in their hormone levels, which may lead to water and sodium retention, and may cause mild edema of the face, thus making people feel that their noses will become bigger. After pregnancy, the nose becomes bigger, usually is physiological reasons, usually do not need to deal with, usually with the woman after the birth, the hormone level will return to normal, the symptoms of the nose will disappear.