Long hair pulled from newborn’s butt

So our son, who is ten weeks old, was very irritated yesterday. He finally pooped with a little help from Windy, but something else came out: a very ling strand of hair. Just slowly pulled out of his butt. Obviously kind of alarmed. Does this happen? Should we take him to be looked at? He’s normally quite fussy, but now I can’t help but think he has long hairs sitting inside him, irritating him. Any thoughts?