I Have Been Using Clonazepam 0.5 For About 9 Months

I have been using clonazepam 0.5 for about 9 months , initially due to panic attacks....Dr said was due to depression. My situation changed. No more panic attacks but on the suggestion of the Dr I was told to use it to help me sleep at night..which I do. Seems I may not need them really. I just saw that a side effect is unsteadiness. My gate is off. I'm now hoping it could be the drug. How long before it can be out of my system to see if my suspicions are vakad. It gotten scarey