Good Lord, I've been sucked into another forum.
A couple = 2.
A few = 3-4.
Several = 4-5.
And I could make further comments regarding many and lots in terms of trolls in Terry Pratchett, but anyone reading this either already got it or is way lost.
Regarding the fact that you were told to soak your cartilage for "several" weeks: I suggest that you do salt water soaks until it doesn't hurt. And should it hurt again, even a year or two later, do some more salt water soaks. I speak from experience. My poor little double-pierced ear would appreciate one right about now (about a year and a couple months since it was pierced), but I'm too tired to lie on the floor with my ear in hot salty water.