When symptoms are observed and medical advice is sought, there will be a period for you and your doctor to figure out the best treatment methods for you. Many investigations will be required such as blood tests, bone marrow tests, X-rays, MRI etc.
It is possible you might be diagnosed in a low-risk stage or asymptomatic, and that means no treatment is required. A doctor will observe and monitor your symptoms closely.
When your blood cell counts reduce and are not able to support physiological demand, treatments will start. You may routinely require blood transfusions (red blood cells and platelets) to keep you comfortable and avoid bleeding.