I work in the security industry in a city with one of the highest IV drug use rates in the country. About a week ago I had to break up a fight between a huge group of people. I kind of recall feeling pain whilst breaking it up, but with an adrenaline rush I don't remember exactly where. A day later I sat in my car and felt pain in my back, I checked and found a very painful lump. It was almost like an acne pimple, however I could not see a head to it. I would usually pass this off as a pimple but the pain was well beyond any pimple I've ever had. I am very worried about the possibility of a needle stick injury, IV drug users continuously sneak in to the property to find somewhere warm for the night, so the chance of somebody having a needle could be high. I decided to forcefully squeeze this three days after, a little bit of yellow gunk came out. I also checked my clothes and funnily enough there is a mark on the left side of my jacket, as well as a pair of boxers which I am sure I wore that shift. These pretty much line up with the lump.
I am wondering if I should chase this up with a doctor? I've tried a brief search online (which I try not to do) and it appears the risk of HIV and Hep C is very low from needlesticks? Is this the case even if there is a lot of blood in the syringe?
Thanks guys/ladies.