Welcome to HCM.
You have to take complete course of oral anti fungal drug like terbinaforce or
itraconazole.
Vaginal tablet containing tinidazole,zinc,
lactobacillus,
clotrimazole will be helpful.
According to me your husband should take
azithromycin,secnidazole and fluconaole kit.
Take proper local care,wash that area properly with antiseptic soap or liquid,try to keep it dry,avoid tight undergarment.
Avoid sex till get complete cure.
Get examined by gynecologist for proper medical management.
Continue your birth control pill.
If it is recurrent then go for cbc,urine,fbs,ppbs,pap smear,usg investigations under guidance of your doctor.