There is no way to tell for sure w/o going for an xray unless the toe is off at right angle or bent weird somehow. Broken toes usually are quite bruised, but that is probably not a fool proof method either. They also hurt.. a LOT!
There isn't a whole lot they can do with a simple broken toe. They usually just tape it and tell you to stay off it and use cold packs. However if it becomes more painful or swollen, numb or feels like the circulation is not right GO to the doctor. My dad keeps reminding me that my grandmother lost a toe because she refused to go when symptoms increases.
I've had several and the really bite. I gotta watch where I put my feet! :doh: