Hi. I went through your query in detail and can understand what you must be going through. From what you have mentioned, it seems that you might be suffering from one of the anxiety disorders which is leading to your constantly worrying. However more detailed evaluation is required for a definitive diagnosis. You should seek a psychiatric consultation and get yourself evaluated. With adequate treatment you will start feeling better.
Next Steps
Consult a Psychiatrist. You can consult me if you want.
Health Tips
Start exercising daily. Initiate the treatment as soon as possible to ensure complete response.