Discharge in boys pants?

[DefiniteMaybe]

Hi, I'm posting this for my sister, my nephew has been getting discharge in his pants. Quite a lot and quite often, almost every day.
He also can go from 7pm at night before bed until the following afternoon without having a wee.
She's currently got a referral to paediatric urology for him because his testicles aren't there, but the appointment is still almost 2 months away.
Should she take him back to the gp about these issues or just wait until his referral appointment? Has anyone else had this?

What do you mean by discharge? How old is he?

Sorry forgot to put that in, he's 3.
I don't know how to describe it, it's white discharge.

My son suffers with with infections/ballunitis regularly and he gets white discharge.

Does your son have any other symptoms than discharge with the infections feck?

Ds1 has had balanitis. His symptoms were a sore, red foreskin and a little bit of pusy discharge.