My breast sizes at 16

hi doc im a girl 16y. My breasts bfre dia besar lps i stress smua tu my b size pun mcm gettin small. Org ckp klu regain weight breast will increase also. I want ur explaination psl ni. Sbb i found out my b gettin small atm :/so can i regain my breast size back if i gain my weight? Ada org ckp jugak klu regain weight lagi tak semestinya the fat tu pergi kat breast n the fat also blh pergi ke stomach or other part of body la. I underweight doc. Im worried sbb found out my b gettin small . I want the sizes back and also worried i ni underweight in this age. And the breast stop growin when the girl reaches 18 mcm tu. I masih ada dapat lagi tak nak dptkan my breasts sizes balik? Klu masa 20 dia akan membesar or just stop growing at 18? Please doc. Im so worried abt my breast mcm lain since i lost weight a lot bc of depression