This is fine. It's your disease and you need to work with your doctor to find ways of overcoming this very difficult time. It helps to know how you are getting on. Ask your doctor to tell you regularly about your progress. This will give an opportunity for the doctor to reassure you if progress is slower than expected, and to discuss changing your treatment if necessary.
Some people find it helpful to keep a diary or journal of their treatment.
This can have practical use as well as letting you express your feelings. For example, you can record each time you felt sick and look back over your treatment to see how this fits in with your drugs. Changes to reduce side effects can often be made using information like this. As your journal develops, you may find it encouraging to look back at how you coped during early low patches. Many people draw strength from realising that they came through before and can then believe they will do so again.