Im 52 KG and 165 CM tall. But my problem is that the "fatness" is not there. Fatness as in the distance of one shouder to the other and distance of one side of the hip to the other side.

From one shoulder to the other, i am only 45 cm ;_; . My dad says that i still have about 6 years to grow so i shouldnt be worried. (My dad is a biologist and he has a PHD and thats why i rely on him sometimes) .

Any excercises ? Medications ? Should i go see my doctor ?