Hello This appears to be hydrocele - a collection of fluid around the testis, which is common in newborns. It usually resolves on its own by 1–2 years of age without any treatment. This condition is usually benign and self-limiting. Most babies with hydrocele do not need surgery unless it persists after 1–2 years or if it’s a communicating hydrocele.

Don't worry it . It won't be permanent it will disappear at 2 yrs of age

Go for usg scrotum . To rule out hydrocoele.

Kindly consult once physically to nearby pediatrician and do once ultrasound testis

Needs evaluation. Please consult a Paediatrician physically.

We need to check if there is a fluid collection of a hydrocele or another swelling or is it simply a retractile testis on the other side

Kindly consult pediatrician physically as it requires evaluation