I am 5'6 and weigh 105 lbs, my BMI is 16.9, am I too skinny? Anything I can do to gain some weight?

Getting dizzy and light headed is generally a circulatory problem. Which could stem from not giving your body enough nutrients to truly function properly. Regardless, being your age, height and weight.

. . You are most definitely not going to stay that skinny forever.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.