Thanks for query on HCM.
Itching,discharge might be due to fungal infection
It usually occurs after unprotected sex,improper hygiene.
Take proper local care.
Avoid tight under garment.
Tale levocetrizine to subside itching.
vaginal tablet will be helpful.
Start oral anti fungal like flucanazole,terbinifine.
If it is recurrent then your husband should take secnidazole,azithromycin
Avoid sex till get complete cure.
Get examined by gynecologist for proper medications.