I stepped on a lightbulb about 1.8 years ago i thought i got all the glass out but am having second thoughts because currently over the last months ive been having a dull pain in the same exact location that i had a cut from the lightbulb i stepped on. The area of the wound has healed somewhat it has also becomed quite hard and callus like underneath the passed few weeks i can see a small darkish round spot that i feel may be blood, is it possible there is still glass inside my foot??