i waited 11 years to get treatment from a whiplash injury when i was six (so i guess my folks actually waited!) - i found i got relief within about three months of regular treatment - but nothing is perfect and i've had to go more often over several years - prolly every 6 or 8 weeks - but i now get instant relief from headache/backache when it happens

my chiro also does AP and basic physio, and has a myotherapist working with him, so gives treatment appropriate to the pain i'm in at that time...