Mole removed next to scrotum 6 years ago, lump under the skin recently developed nearby, should I be concerned?

Not sure a photo would help here because the lump is not visible on the surface. About 6 years ago I had mole removed on the right side/boarder of my scrotum for what was considered a potentially cancerous mole. Over the last couple of days I felt a pea-sized-ish lump, just under the surface of my skin, near the scar. How long should I wait to see if it will "fix itself" before scheduling a visit to the doctor? How much could the doc find out from an office visit. Slightly worried, Thanks