I dont think so. The black hole in the center of the Milky Way had existed since the Milky Way formed, which is 5 billion years ago. If they were expanding bubbles this thread would've cease to exist.
But there's a theory that an expanding bubble or two had already formed billions of light years away. But it would still take billions f years for it to reach us because the speed of light is finite in any way, and the expansion of the universe could prevent then from ever reaching us. By that time humans would've been completely wiped out.