I noticed today that my one year old has a small marble sized lump under his skin where his leg meets his hip/groin area. He doesn't act like it bothers him at all. He squirms so much during diaper changes and baths that I can't be sure how long it has been there. Everything I read online says hernia. Is this something I need to rush him to the er for or can it wait until Monday when his docs office is open? They are closed tomorrow.