I had TLIF L5/S1 on 10/27. Almost all my spine affected as well as hip. So bad this morning had to take a Percacet to get pain down. It has happened on several mornings now. I know I am early in healing pocess but is this kind of pain normal? Or, could I have over exerted even though I have been taking it easy and slow? I slept on my back. Could this aggrevate things?