What do you mean by 'they look wormy'?? Are you actually seeing worms? If so what do they look like? Not to be gross but do they look like long spaghetti or small rice segments?

BTW most vets dont usually charge alot to just do a fecal check for parasites. Many vets don't even require that you bring your pet in, just a stool sample. You can always call to find out what their policy is and pricing for that.