i know exactly what you mean. i just did my second injection last night and it's going over well. just like you, i went and worked out right after the injection and it seemed to work. i shot in my glut and worked out my legs, so i think working my legs helped out a lot. i've heard that the real pain doesn't come until the second or third day so i'm not in the clear yet. i'm to excited about using the sos too. i'd rather take the pain than swith to some other gear. keep trying. i do think, however, that you should try a different muscle group. I don't like quad injection because, personally, they kill me. i'd recommend that you shoot in the glut. at teast you'd be able to have better workouts with your upper body if the pain consists in your ass. good luck bro!