my doctor wants to give me a cortisone injection in my chest (left side, under pec, upper ribs) for costocondritis pain I have had for about 8 months or so. Have had a predizone pack that didnt work, no real luck with ibuprofen, nsaids, etc. He also wants to give me a Tinz pack. Dont know what to do. Should i do both or can I just get the Tinz pack? I also have had physical therapy which helped some but didnt clear it up. Are there risks of shot to chest???