you'l really have to just wait and see if the xray shows callous formation, the early signs of bone healing, when he is reviewed. the ortho will probably try to avoid using internal fixation but if he deems it necessary then its just something that'l have to be done, otherwise there may be a risk of malunion.
if your worried about the two breaks by all means have a doc look into it but i wouldnt worry too much. scaphoid is not that uncommon in younger people who tend to fall around a lot! i myself had a couple of breaks when i was younger and they were just the results of playing a lot of sport and messing around with my friends.