Hi, I believe I have a cactus thorn embedded under the skin in my leg. I tried to dig it out with a sterile needle and knife, but couldn t find the tip of the thorn. I think it may just be a strained muscle, because it s tender when I apply pressure around the area, and I was doing some rock climbing as well, it doesn t hurt to walk on, only when I twist my leg and then apply pressure. I guess my questions are, A) Is it just a strained muscle or a cactus needle? And B) What will happen if I try to let it fester and come out on it s own, will it eventually dissolve or will it surface over time?