I shot up meth 3 or 4 nights ago and yesterday i noticed the target area was tender and swollen. While examining, i noticed it to be red and hot to the touch, the area has expanded just a little bit. The whole red area stretches about 2 1/2 inches length wise starting right at the crease of my inner elbow/forearm down, and is about two inches wide. Although the entire area is swollen, red, and sore, only about half of the infected area is hardened and more sensitive than the rest. This hard Ive never shared equiptment but i have reused my own...... what could this be? And what can be used as home remedies or over the counter? TIA