I've noticed it waxes and wanes, like so days it is much less, other days much more. So I would think it is water, cos I don't think fat can come and go so fast
I advise what I advised. You need to learn how to diet properly and lift properly/effectively. I DO NOT advise you to try AAS... It would be a really bad idea. You have no clue as to what you are doing or the implications.