Gave myself my usual 250mg shot of sus a couple days ago and i noticed when i flex my left glute now(where i injected) there is a Decent size lump maybe a bit smaller then a baseball. and when i dont flex the glute it goes away and you cant see it. its not red at all and not warm but tender abit. I'm assuming its either a knot in the muscle or just a lump of oil. Any Thoughts what it may be? i would appreciate it.