Is depression a real disease?

I have been feeling depressed for about two month now. I know exactly why it happened. I have been crying every day since it happened.  I can check most of the symptoms listed for depression except for suicidal because I know it is not a choice since I have old parents and young kids. Sometimes I feel certain i am depressed i need medical at least psychological help. However at times I feel like I am just finding a easy way to avoid taking responsibilities. I have been taken care of by somebody my whole life. Now this might be ending. All mighty whoever will i pull through this time?