Iv had a hard lump directly underneath my left ear for about 7 months?

For the past 7 months iv noticed a hard lump under my left ear where the lymphnodes are found, that is not painfull and does not move. It has grown slightly since I first found it. Im 18 years old and about a year ago i was diagnosed with low risk HPV. Iv since been to the doctors and was told that it had cleared up, but not sure if that would have anything to do with it? Not sure whether to go to the doctor, or if im just worrying over nothing!??