Dear Welcome to HCM We understand your concerns Removal of cyst by way of surgical procedure and medications thereafter my not cause your described symptoms. But definitely your stress and anxiety after the surgery can produce such symptoms. Therefore your symptoms more correspond to Post Traumatic Stress Disorder. You are undergoing through a lot of distressing thoughts about your medical condition whih drives you crazy. That s all. This will subside after a few days. Talk to lot of people in your relation and friends and you will feel better. Consult a psychologist if needed. I can help you if you desire so. Get well soon.