Help ❗️❗️❗️

I know they say the V😺 cleans its self. I just feel like i can never stay fresh.  i do go the doctor n NO STD ❗️❗️❗️ it just seem like one day its no smell and next its a smell. After a day or 2 after having sex i get i slight off smell. Plz give me information or Suggestions for keeping ur V😺 on good track. I wash ever morning n nite. Am I over Washing???