Hi welcome to Health care magic forum.
Thanks for calling H.C.M.Forum.
You are 20, wt- 50 kg, ht-4'7". you had been to gym. you are also using enduramass a proteine suppliment. your question is whether you have to continue both or you can stop to go to gym.
everything you have mentioned are base less, and no matter whether you go for both or one of it .
First thing you have to consider is the genetic factor. How are your mother and father, uncles, grand parents.
Regarding height there is no possibility of increase of height, as the age of epiphyseal fusion has crossed.
Regarding body buidup you can try by consulting a physician. By using anabolic
steroids, proteine supplements, and gym or other exercises you may get your ambition fulfilled.
Besides you stop worrying about the result, and you go on doing your work.If you don't get your goal, try to get one more goal like education, art, or some thing o your interest.
Best regards.