How Can A Hard Arm Abscess With Soreness Be Treated?

I am a recovering cocaine iv user. I had a relapse last week. Problem, I have a small absess on my left arm. It is not radiating much heat, a little sore but not horrible when I bend my arm. Please don t judge me, I am in recovery. Like I tell the doctors at the quick care before, don t judge please. I didn t wake up one day and decide to be addicted to something. It just happened but I am making a new healthy lifestyle for myself now. It s about a 1/2 inch long, I have been using warm compresses and lots of antibiotic cream. Wash my hands and do not touch it, clean the site quite often. It has been a week and it hasn t gotten bigger, which is good but the hardness hasn t softened. I did not share needles or use dirty ones, they were all clean and the site sterile before using. This is the results of a really bad cut substance and missing a couple times. Please help , I like to avoid doctors because of the judgement. Thank you.. I can send a picture if needed