I hope you do go to the doctor and you are ok Robert.What Up in smoke 420 wrote seems to be the most obvious reason.

Please guys take some advice from me.Don't ever put off going to see a doctor it could be nothing but it could also be something.My dad died from prostrate cancer because the lump he left for a year was cancer and it was too late to do anything about it.

I hope you guys check your testicles,you spend enough time on your penis I bet