Congratulations!
It means your visa is approved and it will get issued soon.
it was same with my visa . I had my interview in Jul 18 , then it was in administrative processing for over two months .
then in Oct 1st my status in CEAC changed to Application received, and in Oct 4 it went back to Administrative processing.
and in Oct 11 it changed to Issued .
your status will change to issued soon , don't worry .
