the tibia is a weight-bearing bone and it takes quite an impact to break it however a person can have an occult or stress fracture of this bone. if this has not improved in a week it would be wise to consider a hands-on examination and an x-ray. in stress fractures the x-ray may be negative so your medical provider may need to get a bone scan if you continue to be symptomatic.
is it possible to have broken a shinbone without experiencing a major event or pain? . about a week ago i felt a bruise on my shin. could not recall a fall or impact. the pain has since receded but i now feel a small bump that appears to be on the bone inferred from the fact that pressure to the bump does not cause soft tissue movement and feels solid. additionally it hurts the direct area i press on and there is a small visible bump. otherwise there is no pain i can walk run or jump normally no tenderness with normal touch or contact and no discoloration of the area.