Unpredictable. But if there is only one fetus, the belly is growing without ahead of schedule, the woman monitors her weight, wears a bandage and carefully rubs cream or oil against stretch marks into her delicate skin every day - most likely not. And if they do appear, they will disappear after childbirth. At risk for stretch marks are women who developed stretch marks on their chests in adolescence, for example, due to rapid growth, women with excess body weight and sensitive thin skin.