the soreness you feel when chewing could represent bruising of the temporalis muscle which is one of the muscles involved in chewing. It may also indicate an underlying fracture
of the jaw bone- thought he site of your pain seems to be well above it.
however, to be on the safer side it may be worthwhile to have yourself checked out in the nearest ER or A&E to make sure that it is only a simple bruising.
Hope this helps.