DS is 4 weeks old, his umbilical cord dried up and fell off of its own accord at about 1 week old. At that point, this red bump was covered mostly by a layer of healed skin, and I presumed it must heal over that way. This red lump has gradually popped out even more over the past week or so. I've kept it clean with cool boiled water and kept his babygrow off to let it air dry, which doesn't seem to help. As you can see I've not cleaned it yet this morning and it is a bit gammy round the sides from weeping. The skin around it is a normal temperature, it's quite a fresh pinky colour - not a harsh red and it doesn't appear to hurt him whatsoever. I may be forgetting but in pretty sure my daughters didn't do this. Should I ring docs ASAP? Or does this happen and I just forgot?!