Paula, whenever Bollingers contract it means that price is stagnating for one reason or another. The issue or index might be consolidating previous gains, "resting" before another move, or bumping against a difficult obstruction. I think BTK is currently in the third category.
Right now BTK is in a short down-channel -- which may or may not turn out to be a bull-flag. The down-channel comes off the end of a moderate-length rising wedge. The rising wedge, in turn, was a (failed) attempt to break out of a big symmetrical triangle. The symmetrical triangle has been building for several months in an attempt to break through the bottom of a really, massively huge descending triangle.
See, it's all just a matter of geometry. {G}
But seriously, these two charts show, (better than I can with words), what your bio-babies are up against.