Can Late Puberty Cause Level Difference In Testicle Which Lead To Cancer?

Hello,ok i am 17 and i have late puberty,it genetic,my dad was the same.So i had both my testicles lifted up before 2 years maybe or 3,i am not sure.My right came down but my left didnt,i thought it will come down bcs i am still in puberty and it will last at least 2-3 years because it started very late,but now i am very scared bcs all i found on internet was that i have some cancer and that i will probably die in year or two so pls help me.I can move my left testc. even its 3 cm higher thank it should be,and my right test can move up,but i can easly move it down with hand.I produce enoguh sperm,at least i think i do, and it look very regular.So...i rly hope for some good answers.

Thank you