I have heard for the first time this innovative idea of putting urine in ears , ----they are all rubbish ideas please do not do that. If may create more problems by causing infections. even fungal infection
may develop which will be difficult to treat.Nitrofurantoin
) may not help in ear infections.
You can have ENT consultation to first get ruled out that there is ear infection or not . or just ear wax
which is causing pain.
Till then you can take Steam inhalations , Xylomatazoline nasal drops to be used in nose --these drops will help in decreasing the pressure or fluid behind the ear drum.