My pinky has been sprained for six weeks now.....does this indicate a more serious sprain or a lack of treatment?

Possibly both: You may want to see your health provider for another exam and possibly an X-ray to check for a fracture.

Current status?: Sprains take a long time to heal That's why they used to say that a sprain is worse than a break.if you have significant loss of motion, you should have it examined. Sometimes a "sprain" can be something else.