Do you thinks it's wrong...........?

Depression can come naturally so you don't necessarily be diagnosed with depression. Ignore doctors because all they think of is increasing tablets the more you talk about it with them. Unhappiness can stay with you for a long time but goes away by itself. I have depression but I was never diagnosed with it. I think it's natural to feel depressed because of what somebody might have done to you to cause this and anything done to you in the past that makes you feel this way. A lack of interest and being ignored can cause depression. So it's right to say you have depression when not diagnosed with it because it's a natural feeling just like other emotions. That's like saying to express your emotions that you'd have to be diagnosed with it which is rubbish talk so whoever said this to you do not know what they are saying.