question: i have a small lump under my left testicles and it hurts lately when i applied small pressure on it, it bit hard compare to both of my testicles. i just found it a week ago...i am a sexually active person at the age of 46...i also take a sexual enhancer pill like Robust brand every time i make sex with my partner. it's like an oval shape as i touch it...i want to know what may cause this and how threatening this to my health?