Hi iam 17 years old. Every now and again I get a sharp pain in my left testicle mainly but sometimes on the right. Once the shooting pain has gone it leaves the area with a dull ache. After many and hour or two ( 2 days at the latest it all dissapears). I also get a spot size lump on the left testicle that dissapears. I've been told that's normal.

Thanks for any help