dick problems

[Ogryn1313]

I discovered something on my left testicle over a year ago. It's actually on the testicle itself beneath the scrotum skin. It's on the back of the testicle. It's a little hard and pointy spot about the size of a sesame seed. I also feel a hard vein close to it. The spot itself isn't very sensitive to my touch, although the entire testicle itself is somewhat tender and larger than the other. To make sure it was not a natural thing I inspected my right testicle and it doesn't have such a thing on it.
Having no medical insurence means I can't afford to go check it with a doc. What do you think it could be folks?