On last night's RAW, Nia Jax attacked Charlotte before her loss to WWE RAW Women's Champion Asuka, and again backstage after the match. WWE gave a storyline injury update that the attack may have led to a collarbone fracture.
Charlotte is actually going to be out of action due to an unspecified injury and will be undergoing surgery, according to F4WOnline. The injury is reportedly not a shoulder injury.
The report noted there's hope Charlotte will be in time for SummerSlam in August.
Update: PWInsider is reporting Charlotte is neither injured nor sick, but is undergoing a planned elective surgery. The report said she's expected to be taking six weeks off WWE TV.