STAY AWAY FROM
steroids until you are old enough and educate yourself.
500 D's will not do shit for you...well, make you hold water and get a bit stronger, but as soon as you come off of them, all that weight will go away...and you will have shut down your antural test production and at your age, you cannot afford to do that...you sound like an ox now, no need to add
steroids until you are 21 to 24. Wait and let your body finish running its puberty course.