Umbilical cord near his neck ...

Hi mummies, I’m turning 28 weeks after Sunday. Went for our usual monthly gynae check up. Gynae say my boy’s facing downwards. But he mentioned that his Umbilical cord is near his neck. Must monitor his movement... Will Swimming once a week or any activity help to try to move him away from the cord? Or any advise? Worried now but I know there’s nothing we could do apart from monitoring his movement now...