Friday Morning My Thoracic Back Felt Like It Locked Up.

Friday morning my thoracic back felt like it locked up. I've had surgery at T8 T9 it was a partial discectomy in 2013.Following the lock up I had a lot of pain in the back and more do left side ribs. Pain moving or turning to the left. Last night I started to experience chills and a really bad headache. Today just pain in that area of the surgery. Still not feeling well.