gain weight only in stomach

so i’m recently gaining weight (i just turned 21 so i guess its puberty part 2 lol???) and i’ve been only gaining weight in my stomach wnd arms :( ut’s so frustrating because i barely have boobs or an ass so i look fucking grosssss and it makes me wanna cry all the time :( is there any way to gain weight in my butt/boob area and lose stomach weight? i feel like an oompa loompa