Bockers back is a sort of ache that you get from using a lot of muscles in your back that you are not used to using
What you have dosen't sound like bockers back
At the meet did you land awkwardly or leaning forward as I and a few others I know have pulled muscles by landing badly
This can take a long time to heal like any back strain
Your best bet would be to visit either the doctor (if you have a doc that does something about bad backs) or I normally go to my Chiropractor and she sorts it out
But rest is normally a good idea
Hope it feels better soon
Jason