Hi, I Usually Go To My Oncologist With The Problems

Hi, I usually go to my oncologist with the problems I have but I am not sure what is going on with me right now. I have CLL. I recently had an immunioglobin infusion, which I receive about every three months. Since that infusion I have had continual itching. With the itching, or I should say before the itching there is a burning sensation and some tiny like bumps than the itching begins. It usually itches on my chest, breasts upper arms and my back. I also recently had a tube put in my right ear for some drainage problems. Actually I don't feel well at all. My main concern is the itching and small blisters that have appeared under each breast. Please advise if I should be seen in the ER, see my primary physician or my oncologists. Thanks for your time.