Pregnancy Congestion Remedies Patched File

Here is the full text on , including causes, safety guidelines, and effective treatments. Understanding Pregnancy Congestion (Rhinitis of Pregnancy) Up to 30% of pregnant women experience nasal congestion without a cold or allergies. This is often called "rhinitis of pregnancy." It typically occurs in the second trimester and can last until delivery. The cause is hormonal: increased estrogen and progesterone lead to increased blood flow to nasal membranes, causing them to swell and produce more mucus.