How can you tell if you broke your collar bone

Recently I was at my friends house, and we were hanging around on his roof. Well he went down to get something and removed the latter from the roof. So I went to the short part of the roof and see if I could slide off. well the drop was about 6 feet and I landed on the deck feet first and fell foward on my hands. On the left side of the collar bone is a divet and not the same on the right, plus it doesn’t hurt at all in anyway I move it. could you please tell me if sounds broken or not