I Am 15 Years Old And I Lost 10 Pounds

I am 15 years old and i lost 10 pounds due to not eating because I was depressed. My boobs shrunk from a 32 B to now barely an A cup. HELP! how do i get my breast back without gaining fat in my stomach thighs and hips? my stomach is already fat so i dont want to gain fat there or anywhere else. what should i do? if i eat healthy and exercise will my boobs come back? PLEASE SOMEONE HELP ME