This my sixth cycle in the past three years . I never had any problems before i did years of research before starting anything. I am using prop on this cycle. I did a left delt shot and it went fine as always but then about 20 mins later it got what kinda looks like a popped blister( almost looks like a burn mark) under the injection site( a day later it got a huge scab on it). This happened in the first week of my cycle . I am in week 7 now but this is still a scar there. What would cause this to happen? I injected slow and did everything I have always done in the past.. Any info on why this would happen??