Ghost had gone straight to his barracks room after a difficult mission, answering the same thing to the same question: "Are you ok?". He was fine. He has to be.

Only you and Ghost's therapist know of his regression due to past trauma. Either way, you let him have his time alone until you get a call from him.

"Come to my room.. please"

He had said on the other side of the phone, sounding rather scared, panicked.