Josh what are your goals? Strength or Muscle, there's some overlap for sure but I know power lifters that are 80kg and tiny who can outbench me every time and I weigh 109kg. There's also 110kg shredded monsters in my gym who can't lift for shit but look great.

Once you decide that then we can all help you with a diet and workout routine to suit your goals.

We'll need to know what your weight, height and a rough estimate on your fat percentage to come up with a diet and a workout routine.
If we know what you're currently doing routine wise it'll give us an understanding of where you're at.

Don't think we're putting you off roids cus we're all doing them or we wouldn't be on here, that said 18 is young and I remember some asshole in the gym recommending, then selling me a Deca only cycle at 18 to line his pockets, there was no Internet or book you could read in those days. We're all here to help, having been where you are now.

Your natty test is prlly very high but so is your metabolism at that age and you have to put in a ton of more calories then some of the older guys when our metabolisms slow down.. You testosterone is at it's peak at 18 and it will never be this high again so take advantage of it.. Sure go get checked by a doctor but i'm willing to bet your not putting in enough food.. I know tons of guys that just don't gain because they're afraid of putting on fat.. eat like you are jenny craig and train like your the damn hulk and you will grow.

If you doing everything right like you said, You need to see a doctor and get checked you might have some lil health issues(i hope you do not) And may be check your natty test levels which at your age should be pretty good.

If you are doing everything right then you need to get to the doctor and get a physical and full blood work to see what is going on.

Come back and post some details of your diet and workouts...you got zewi sgt tread and Irish on the your thread...dont waste the opportunity to gain some knowledge

If you didnt see much gains at your age, then you didnt eaither lift,eat, or sleep seriously.
I know its tempting to jump on juice, but if you dont have base muscle built on your frame, your not gonna see major changes other than moodswings and possible gyno.

I started lifting since I was freshman in highschool, and I was like 140, 5'9 tall, could barely bench empty 45 pound bar for 3 times. And by the time I graduated I was 189 and was able to bench 275 for reps. It was done without any roids. Hell I didnt even took any supplements

You need to do ALOT more research man. I have done more than 4 years of research and still learning. I dont want to hear another high school teenager killing himself for having moodswing and end up gyno.

Man I would kill to have the feeling of being 18 again and im not too far past it. You have a ton of natty test...no need to kill it. If you think you are low get a blood test and see where you are at. Post your diet and workout program and im sure the vets will he more than happy to tweak a few things to get you gaining. Check out the thread " beginners here at eroids"

what is your stats and diet consist of?