Pedro admits Barcelona's locker room is down after their shock defeat at Osasuna.
The loss could see Real take a 10 point lead at the top of the table.
"We're saddened by how the game has gone. We're unhappy," said Pedro after the match.
"We struggled to get into the game and Osasuna came out of it the strongest. We should have been able to overcome them, but ultimately we could not."