Be certain you differentiate between the possible and probable side effects of your proposed treatment. Your doctors must explain all the possible side effects to you, but request that the probable effects be enumerated. You will find that of the many possible things that could happen, very few actually should happen. Also, some patients mistakenly interpret these side effects as their cancer worsening, when in reality they are the normal effects of their treatments and their cancer is probably getting better. Expect some degree of depression.
Cancer is a serious illness.
Many of the treatments are depressants. Plan on ways of coping with them. Call a friend. Take a walk. Do something you really enjoy.