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Hay fever season runs from August through October. Because of the ragweed pollen and mold spores in the air, you may experience nasal congestion, sneezing, a runny nose, or itchy or red eyes. These symptoms only add to the normal congestion caused by pregnancy-related swelling of the nostrils.
Normally, the immune system responds to a threat, such as harmful bacteria, by releasing chemicals to destroy it. Allergies occur when your immune system reacts the same way to harmless substances such as pollen or animal dander.
Your first line of defense is to avoid contact with substances that trigger your allergies. If you're allergic to pollen or mold, for example, follow these steps to reduce your exposure: