No, it's a sign of a cyst, which is a common thing on the scrotum. These are filled with white material, which is dead skin cells, although it looks like pus. Just leave it alone and show it to a doctor next time you go.
Best.
Dr. Rockoff
I am not a doctor, but in my 20's I noticed a small lump on my scrotum as well. I worried myself sick. Turned out to be a sebaceous cycst and not a thing to worry about. I am sure the Doctor will have reassuring news for you as well.