I just did a shot of 1.75ml shot of 100mg/ml prop (1Ml) yesterday with .75ml of B12. I am in my second week of my cycle and have not had too much pain to speak of yet with my injections, nothing that prevented me from going to the gym anyway. but today and even late yesterday I have developed a hard lump about the diameter of an egg, but only sticks out very little bit, I underdstand that this may be a deposit of oil or maybe and abscess (I am very careful to do everything VERY sterile), but what else could it be because it as painfull as hell and even a little warm to the touch and can not really move my arm above my head, the injection itself was even a littlle painfull... please help, I am goin to continue to massage the hell out of it, but what else can I do and has anyone had similar problems?