But since a few can be a sign of more serious problems, bring any to the attention of your obstetrician. If you experience a sudden onset of blurry vision, however, check with your obstetrician immediately. It may signal dangerously high blood pressure, known as preeclampsia. Engorged nasal tissue can bring on nosebleeds and stuffiness. Strong immune reactions trigger allergies, and progesterone and higher levels of the hormone cortisone suppress the immune system.
Dizziness occurs for the same reason.
Extra fluids can also create excess saliva, as well as swollen and bleeding gums. And some women develop tiny growths on their gums. This discoloration is similar to what some women experience when taking the Pill. In the third trimester, because of fluid retention, the nerves snaking through tiny passageways are likely to be pinched by swollen tissue, which can lead to, or worsen, carpel tunnel. Occasionally, the shooting pain, numbness, and tingling can migrate to the forearm and shoulder.