My boyfriend Injected meth into my arm yesterday it started to burn while he was injecting so he stopped and repositioned the needle, twice. After I did the shot I wasn t in any pain but my arm had a large lump on it. The lump wasn t red or painful. After about an hour the lump completely went away but my vein was really sore and what started out as a light red bruise next to the injection site has gotten larger and actually looks like a rash now. There s also a small spot with a couple tiny red dots by the injection site. The soreness has significantly decreased although my vein is still sore. but the rash or bruise is still there. It s not swollen and there s no heat coming from it. I know that it wasn t a missed hit because I ve experienced that before and I ve had an abscess from that missed hit. This doesn t seem like an abscess so what is it? A rash?