That's a bit weird, usually shock loss happens around the area where the grafts were taken so I am not sure in your case, it could still be shock loss, were you on any medication like minoxidil and have you stopped using it? that could be another thing, either way you should contact the clinic or the doctor that did the surgery they are more qualified should be able to help you.
At what length did you generally have your hair pre surgery?
Perhaps provide another photo of your current situation and also any photos with longer hair pre hair transplant.