What Should My Partner And I Do For Persistent Vaginal Itching And His Itchy Penis With White Discharge?

Hi! I had itchy vagina since last 20 days. I tried having levocetrizine and candid-B powder initially. It gave slight relief but didn’t cure completely. Then a gyaenacologist advise me to take VDM kit which gave instant relief. Though slight itching was still there at times. Now recently i had sex with my partner and now he has an itchy penis with white discharge. What should we both do? Do suggest both of us some medication.