I hit the front of my tibia right about 5 /13cm below the knee on a concrete corner of a step, it hurt like hell for like 10 minutes and then was less painful, later it swelled so I placed ice on it and forgot about it but now after a bit more than a week, I noticed an indent in the tibia where I was hit, it s about 1 long (and parallel to the ground) and a bit less than 0.5 wide, the indent is about 3mm in. There s no swelling or pain now nor discoloration. Should I be concerned about this ? If I lift heavy weight can this indent be a weak spot that can lead to a fracture ? Can it heal back and why are my bones so soft ? Thanks in advance.