Injuries to the Genitals ca..

Ever since I was little I have been horseback riding. I took a break from it when I was diagnosed with scoliosis and have recently started riding again. Yesterday I noticed one small red bump on my genitals. Now, I know it's not caused by a sexually transmitted disease, I was tested about 6 months ago and have not had sex since then. It's been about 5 years since I have seriously ridden a horse and I just returned to it about 4 days ago, so could it be just irritated skin or a bruise or something more serious?

probably nothing.. I ride and have never had problems.

Nah i dont think so. but you never know.