DS had his 4 yr appt today, and his pedi couldn't find his left testicle. She had notes from his previous well visits that it was always there, and tried a few times to get it to come down. She gave us a referral to a urologist, but also suggested trying to feel for it when he is in the tub and said if we could definitely feel both of them, that we could skip the urologist. She made it sound like this is not incredibly unusual. Anyone have experience with it going back up?