@eeeefarm In all these years and with lots and lots of hernias (Basenji Moms have a tendency to take the cord in their mouth, paw in the stomach of the neonate and WRENCH so they are understandable) I have never known (or heard of for that matter) one strangulate.
But as @tanza says, careful observation - is the lump changing colour, for instance - will show you if things ARE going wrong.