What have I done to my Tibia/Shin area?

I know that pain, trust me. Once I scd the inside edge of my shin just like where yours is and it was painful and bruised for over a month. What you have there is most likely called "bruising of the bone". You have a deep bruise that goes well beyond the surface tissue, right to the bone. I highly doubt you have any chip or break of the bone, its just a deep, stubborn bruise. Best advise is to ice the area several times a day for 20 minutes at a time. Eventually, it will go away. If you're really concerned, you can get an xray, but i ure you it's most likely not a fracture. This is a tender, flat slab of bone that does not like taking a hit, especially a "raking" of the area too well.