Having a problem and need help

Hey guys well I have an 08 can am ds 450 and was riding sunday and went to shift from 3rd to 4th and it felt like it was in neutral so i down shifted to see if mabey i had messed up and put it in neutral by accident but nope so I stopped the bike and come to find out that it wont move at all it shifts but doesn't move is the problem the clutch the bike turns on like it should I dont hear any weird noises and everything looks fine please and input would be a good help thank u on advance..