Welcome to HealingWell. I look forward to getting to know you better. I am glad to hear you are going to see your Doctor. Perhaps going back on the medication is a wise choice for you.
It feels to me like you are having anticipatory anxiety.
Anticipatory anxiety is where a person experiences increased levels of anxiety by thinking about an event or situation in the future. The worries you experience specifically focus on what you think might happen, often with catastrophic predictions about the event.
Relaxation exercises are also good for occupying mental capacity. Relaxation exercises are techniques to relax muscles and relieve tension by using controlled breathing and muscle flexing. They usually involve sitting down in a comfortable chair, closing your eyes and systematically tensing and relaxing different muscle groups in your body, usually starting with the legs and feet. As you slow down your breathing and work your muscles, you are supposed to mentally put yourself in what you would consider a relaxing situation. The best thing about relaxation exercises is that they can be done almost anywhere and at anytime. Remember to use a sitting position when doing the exercises rather than lying down since you do not want to fall asleep. Again a warm welcome to our great forum.