What should I do about red pouch from where they were draining me? (Photo)

I did a abdominoplastia liposuction and bbl with breast reconstruction I drained for 32 days in DR now I am back to New York. What can I do in this case I am really scared and on top of my butt where they was draining me is a little red pouch I don’t know if is fluid or what but I am scared my doctor said it was ok for me to come back home now I am having all this complication. What should I do, my left side of my lower back is harder than a rock and it hurts I been getting fever.