Right testicle complete rotation.

Few months ago in the morning when I woke up, I noticed a mild pain and heaviness in my right groin and leg then I saw my right testicle was not sitting like it used to, it rotated then after few days, I felt heaviness in my right leg whenever I walk, then I noticed my testicle used to rotate frequently in the scrotum and recently the spermatic cord started to feel a bit entangled and the testis has got shorter in size as well as slimmer. My right groin hurts too sometimes like a burning sensation. The right part of the testis feels so soft and the spermatic cord is definitely not straight like it used to be. What's going on with my testis? Due to this I can't walk with comfort. I went through a scrotal ultrasound last month for this and a left varicocele was noted but nothing showed up for the right but I can clearly see a difference in size, shape and how the spermatic cord used to be.