In everyday speech people use the word "depressed" to mean feeling sad. Clinical Depression (or Major Depression) is not the same as sadness. Persistent low mood is one feature of Major Depression. But surprisingly, low mood is not a requirement for the diagnosis. Depression can be diagnosed if other key features are present - such as loss of ability to enjoy things, tiredness, problems with sleep, concentration and appetite, feeling hopeless etc. Sometimes Depression can present with mainly physical symptoms, such as pain. Or sometimes anxiety can be more prominent than low mood.
If you feel you don't have any of these symptoms, why not discuss it with your prescriber, or ask for a second opinion?
We advise people to continue antidepressants for a year or longer after they start to feel better. This helps to stop it coming back.