My ds (6) has what I think is a splinter in his heel, it looks like a small blackish greyish dot but is under the skin with nothing I can grab with tweezers poking through. It is painful to touch and he has had it 'for a bit' - I noticed when I was helping him with his shoes and it hurt him to pull it over his heel. My mum says I need to dig in with a sterilised pin, but I honestly don't think I will be able to do this - has anyone got any suggestions of the best way to get it out? Many thanks!