Hi I wanted to say there are several signs of depression. I suffer from and have for years. I would suggest speaking with a therapist. Don't feel afraid or ashamed that is what they are there for. May I ask why you think you may have depression?
Depression differs from individuals, but there are some general signs and symptoms. They include sudden loss of appetite or weight, loss of interest in daily activities, sleep changes and feelings of helplessness and hopelessness.
signs of depression are... fatigue, loss of interest, in well, everything...crying for no reason, anxiety, loss of appetite, or eating more then usual. You would isolate yourself. I might have left a few symptoms out, but i hope this helps!