Anyone looking for an update on this! My GP said that given he’s in good health and the description I gave of the worm they think it’s unlikely he has worms, but have us some medication as a precaution. It was probably in the bath somehow before I ran it without me realising 😅
I'm not sure what they look like, you should do a Google search to see if it matches the images. And look in the nappy for any more and a doctors visit won't hurt