My orthopedic doctor told me that collarbone pieces will grow back together if they are in the same county. I had to sleep on one shoulder for 6 weeks. At the end I got vertigo which I self-diagnosed as Benign Paroxysmal Positional Vertigo (BPPV), which is when calcium crystals settle in the ear canals. The vertigo stopped once I was able to sleep on the healed collarbone. I too have a bump.