Originally Posted by inheritmylife
Yeah, you may have some undispersed oil in there. An infection is possible.
If you don't feel sick, or your temperature is not higher than normal, I think that it is just irritation due to too many frequent injections. Use a heat blanket to get some blood to the area.
If you get fluish, develope strep, or the area changes color or goes numb, you may need to see a doctor and get some antibiotics. If going to the doctor is not an option for you, you can get 500mg doses of Cephalexin at an aquarium store.