I injected morphine three days ago and missed my vein. I now have a large lump on the bend of my elbow. it is red and swollen. I ve also experienced some numbness and tingling on my hand on that arm though it only happens when I bend my arm a certain wsay. I ve also experience soreness throughout my entire arm. Is this an abcess and can it be treated with heat or some other home method? It was my first time iving myself in over a year and I fear junkie stigma