I'm so sorry you are feeling this way. It is hard when an illness causes you to become depressed. I have felt this way with my bowel problems.
Have you seen a doctor about your depression? If you can take antidepressants with your condition, these may be helpful to you. Also, have you ever heard of health psychology? At our hospital we have health psychologists who help people with illnesses learn to cope better. This can be helpful in getting you to try and lead a normal life even though you have a condition that is stopping you from doing certain things. Its definatley worth looking into.
I hope you see your doctor about the depression as it is obviosley affecting you a lot.
Take care hope and post again to let us know how you are