Yes your BMI is low (underweight
) according to given data, but concerning your age at 14 years I don't suggest you to putting on protein and bulking up your muscle mass. It is okay to be skinny at this age. High protein intake will cause proteinuria
and can cause damage to kidneys.
I suggest you to have more carbohydrate
intake relative to protein and fats and fruits like banana along with milk which will help you to bulk up your body. I suggest you to start working out in gym after 18 years because doing gym workouts before that age can limit the body's height growth in some cases.
Thanks and Have a good Health.