Well I know there's no glass in there because the object didn't break until it hit the ground after hitting me. My dentist did a pretty thorough series of X-Rays, like 8 of them if I remember right including my cheek area, so I'm pretty sure there's no fracture.
I hadn't considered an infection or using vitamin K though. Thanks for that advice!
Well, I only have common sense answers for you. Usually if a bruise (or black eye) doesn't go away after two weeks, you're supposed to see a doctor about it. It is possible you still have some glass in your face, perhaps, causing continuation of bleeding, and thus the blood that is still be accumulating under your eye. Since your dentist X-rayed your teeth and surrounding bones, I'm not sure if he also saw your orbital bones, but could be you have a little fracture there that is causing a problem with your undereye. Also, might be an infection has set up shop from the cut, thus causing the ecchymosis.
Now, as for some neurological thing at work here, the numbness you felt is normal from an injury to the face that causes a black eye, so a neuro is not who you need to see. I personally think you ought to visit an eye specialist, to find out how come you still have this black eye, so he can stop the origin of the discoloration. By the way, Vitamin K is good for clotting blood, you can get it from dark green leafy vegetables.