Now I'm not a doctor,nor a medical person trained in science, but from everything I have read and heard, it is not a good idea to just stop. Sometimes doctors do this to you through no fault of your own. If this happens to you, you need to get more medicine immediately and slowly withdraw. Abrupt withdrawal is not only unpleasant but can harm you greatly, especially some pills/medicines.
I only meant well, I didn't mean to scare, but we should be aware of this. Love, and prayers, Sally