If this bruise has lasted for three and a half weeks and it was just match box size train cars that hit this area then I would have it looked at as any bruise that does not go away within a reasonable amount of time should be checked out. If you also iced the injury that should have promoted healing and it honestly would be better to have it checked out to make sure that it did not actually crack the jaw line and that there is no underlying illness causing the bruising to continue on for such a long period of time. From how you state the injury happened three and a half weeks and still showing a bruise is not typical and it would be better to have his pediatrician look at the injured area.
*Cheryl K* Please click the
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