Okay, I reset Safari and emptied the cache. I even retstarted my Mac, but nothing was fixed. 🙁 I asked my roommate if she could view any of the pictures I was having trouble seeing on my profile and she couldn't either, so I'm assuming that the images are corrupt for some reason. I'm not really sure I understand why this happens as the pictures were fine a few weeks ago and I don't have the originals anymore. Blah.
Edit: I don't know what's going on here. I went to delete an album, and it allows you to view the pictures in the "Edit Album" view and now I can see all of the ones I was having trouble seeing before. BUT, when I go back to the regular "View Album", the little blue box appears.