what can cause a congested nose
Pregnancy rhinitis is congestion or a stuffy nose during pregnancy. It may feel similar to the nasal congestion you get when you have a cold, but this condition is partly caused by hormonal changes during pregnancy. For example, a higher level of estrogen during pregnancy can cause the lining of the nasal passages to swell, producing more mucus. You also have more blood circulating during pregnancy, which can make the tiny blood vessels inside your nose swell and lead to nasal congestion.