To be honest, I find it hard to believe that kambo didn't do anything at the time of the application and has waited until now to kick in - the frog doesn't vegetate on the couch! I read somewhere that the effects can be felt for a few days to even months. As everyone responds differently, maybe it was working slower and you or was healing you on a subtle level first and it has taken this long to get your immune system healthy and to get rid of your allergies.
Congrats! It must feel good.