I was hit on shin, above ankle, with a softball over a week ago. Bruising seems to finally be improving, but still have severe pain when walking after moments of rest but does improve after initial steps. Has a knot in center of bruising. Is it possible to have a fracture?
No .very unlikely there is a fracture as your walking is painless. As said by you after few steps your symptoms are getting released. This suggests the injury is only a soft tissue type injury