New iPhone 5, photos not syncing, forever "loading"

I bought a new iPhone 5 today, and as my old apps and photos began to restore, I saw that it was working and left. However, now everything has stopped, and none of my apps added back on and all my photos are "loading" except for about 20. Is there any way I can get my photos to be completely synced? It says that I have 900 some photos but every one is just a blank grey square.

Thanks in advance!