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Ive used eggs from the store that were 4-6 weeks past the exp. date that had just started to stand up in the bottom of the glass, the floaters would get tossed out. These are refrigerated eggs though. Here is a link to different techniques which used a 8 month unrefrigerated test.
After eggs are refrigerated, they need to stay that way. A cold egg left out at room temperature can sweat, facilitating the movement of bacteria into the egg and increasing the growth of bacteria. Refrigerated eggs should not be left out more than 2 hours. (They also say some very sad things about Easter egg hunts.) So if you're being strict, three days would be way too long. In reality, you'd probably be okay. The chances of getting salmonella are definitely higher, but are presumably still small (though I can't say exactly how small, of course). Personally, given the price of a dozen eggs, I'd probably play it safe.