I Have Had A L4 An L5 Fusion Back In

I have had a L4 an L5 fusion back in 2009. I have disc degeneration going on above an below my fusion an my muscles are pulling away from my fusion. I have just in last few weeks started experiencing loss of my bladder an bowels an I don't know what to do. I just saw my pain dr this past week an she asked me if I had had any loss of bowel or losss of bladder an I told her no ,just because It's embrassing. What should I do? It's only getting worse