Thanks for your query.
Post traumatic cervical pain
is a known phenomenon ,but cervical pain can be in the upper limb ,neck & upper half of chest only .
It can`t be in the lower back & legs .So pain in the whole left side can`t be due to cervical ,but from some other ailment .So investigation is must for proper evaluation & treatment.
‘Hope I have answered your query, I will be available to answer your follow up queries, “Wish you Good Health and trouble free speedy recovery”