Sorry to hear it.

Broke my left clavicle in July 2006. No motorist involved -- some bad pavement on a bridge spilled me over. The bone did not heal correctly on its own, and I ultimately had surgery in January 2007, and resumed riding in March of 2007. Walking was my main, if poor, substitute. So you'll have to see how your particular fracture recovers. Definitely agree with the advice about seeing a specialist -- one with an orientation towards resumption of cycling and other strenuous pursuits. And use the PT to assure full range of activities.