The exact cause is multifactorial, but papers generally agree on the following physiological mechanisms:
Here is the breakdown of what is happening, why it lasts so long, and how to handle it safely. stuffy nose and pregnant
Before diagnosing "stuffy nose" as simple pregnancy rhinitis, physicians are guided to rule out other causes: The exact cause is multifactorial, but papers generally
Mabry RL. "Rhinitis in pregnancy." (Southern Medical Journal, 1986 - Seminal paper). The exact cause is multifactorial
It vanishes within 48 hours of giving birth. That first clear breath postpartum feels incredible.