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Raspberries (and blackberries and all those similar) have a short shelf life which is why you rarely see them sold in stores. They might last a day or two but go bad fast (even with refrigeration.) Blueberries also go bad quickly but can last a bit longer. Yes, refrigerate them, but don't wait too long to eat.
Fresh blueberries will last a week or two in the fridge, and 10 to 12 months in the freezer. Not the case with other berries, though: Raspberries, blackberries and strawberries typically last just two to three days in the refrigerator (but, like blueberries, they'll stay good in the freezer for 10 to 12 months).