Hi mate before you try steroids there are some other options ?
from your posts i assume you want to bulk up
first of all i would recommend focusing on compound exercises (benchpress/squats/deadlift)
try and do 2 of these exercises per workout and finish on maybe some arms/shoulders/stomach/lats.
heavy squats can increase your strength and size up to 15% over time

Also try changing your protien drinks met-rex is the best ive found .
if you have the can afford it i would have a protein drink 3 times a day
morning/post workout/before bed .

and dont be afraid to eat fatty foods burgers/pizza/chips/icecream you sound like you have a very fast metabolism so you need to stuff your face at every oportunity .

and try to think longterm theres no such thing as a quick fix if you want to get big/strong it takes a long time.

hope i havent been 2 annoying lol