Could Feeling Of Emptiness, Mood Swings And Poor Focus Indicate Depression?

Dear doctor, At this moment I am going through a lot of emotional changes like too much eating, depression mood, boredom, lack of interest, hopelessness, helplessness, irritable mood, inability to focus, poor concentration, aggression, hyperactivity, aggression, hyperactivity, hypoactivity, too much sleeping, anxiety and nervousness. I feel a kind of emptiness inside me. Is this the start of depression??