Testicular pain(bilateral, constant, intermittently more severe)+thigh pain, warmth of scrotum increasingly with pain. torsion and trauma ruled out. ?

Inflamed vs varices: Pain is a result of inflammation or changes is circulation. It is unlikely (extremely rare) to have bilateral torsion. If you don't have bilateral inguinal hernias, you should consider undergoing a scrotal ultrasound to assess for increased flow suggesting epididymal orchitis, or changes in flow seen in varicoceles. If "-", then it could be a ligamentous strain.