Then you get shots that have a tiny bit of the allergen. The shots help your body get used to the allergens, so you won't be so sensitive to it. Mowing the lawn or raking leaves can make you very sick if you are allergic to pollen from grains, trees, or weeds. It's a problem if you are allergic to molds, too. Keep windows and doors shut and stay inside when the pollen count or humidity is high.
Early morning is sometimes the worst.
Put an air conditioner or air cleaner in your house, especially in your bedroom. Be sure to clean the filter often. Wear a dust and pollen mask if necessary. Add an electronic air filter to your furnace or use portable air purifiers. Take carpets and drapes out of your bedroom.