hey. I injuected 100mgs of test c into my left thigh 4 0r 5 inches above my knee. that is where my source advised and assisted me to inject. that was monday. it gradually got more sore and red and swollen. today is friday and my knee is red and warm and pretty swollen. It is my first time using any kind of steroid. I just want to know if this could be a site reaction or if it is an infection? can anyone please help?