Hello. I'm a college student who recently stated shooting up. I don't remember if this is a bruise or if it's a spot where I shot up the other day. I was hospitalized 2 days ago for a few hours due to a severe allergic reaction I had to something unknown. I was going to sit down and play on the Internet when I noticed on my leg a black bruise looking thing. About the size of a golf ball. It's pink and black much like a bruise but has darker purple spots in the center of it. It doesn't hurt, but looks odd. On my legs there are some little like sores on my feet like a picked zit, there is no pus and they seem to be going away. Around my crotch area and upper leg there's scratches, anfew kind of look like smeered blood, from where I itched so hard from the reaction the other day. My sinus mucus is a dark yellow, been gettIng a cold it seems. I'm curious, if i was in the hospital 2 days ago from an allergic reaction and they took my blood wouldn't they have seen if i was septic or not?? Or had blood poisoning? I'm done using needles for good, I just hope I don't lose my life or a limb. I don't have a fever right now, don't think I have had one recently.