If you are not gaining weight, increase your calories. Make a chart that has your weight, body fat %, and calories consumed. Increase your proteins, healthy fats, and clean carbs. Stay away from the junk food. Start by increasing your calories by 250-400 per day. Try that for a month. If you have not gained a pound of muscle or two increase your food a little more. At your age you may likely add more than that. I personally like slow increases in calories becouse if I make big jumps in my caloric intake my bf% makes big jumps as well. If you can not game weight you are not eating enough or maybe you have a tape worm. Stay a way from the gear for atleast 4 more years. Most guys don’t stop growing until around 25 anyways.
This is really sound advice. TS, no offense, but you have no business doing gear.