Answer:
What can you catch but not throw?
I may seem real but it always turns out I was never there in the first place... you only see me during a certain resting stage.
No matter how little or how much you use me, you change me every month.
My first part compliments people. My second part makes things known. My third part hurts feelings. My fourth part may hold a precious treasure. My fifth part is used when sharing fancy beverages.
I wear a green jacket on the outside white jacket as a second layer and red jacket inside. I am pregnant with a lot of babies. (one word)
I start with T end with T and within me is T.