Talk to Urologist on Testical Power Lost And Discoloration

A. S. A Dear doctors i m married since 2years not have baby yet my problem is after marriage after 10months my testicals lost their weight like dhalak jana and minor pain in right testical often on bike driving and from previous some months my testicals skin colour changed also like turning to white painless skin type no pimple etc size of testicals also normal is it eczema or fungus and why my tesricals loat their weight before marriage it was tight and normal what tests should i do thanks.