Sounded to me like a sonic boom from an aircraft. I thought a tree fell on our roof except for the fact there are no trees around me.
Someone suggested it might have been a bomb drop test in Ocala forest but IMO that was too "sharp" a boom to be from that distance. That would have been more echoy from that distance like far away thunder. I'm going to go with sonic boom for now but don't really know. It WAS loud and it shook our house.