Dear
Welcome to HCM
We understand your concerns
I went through your details. You have not mentioned your are here. First of all, I request you not to worry regarding your current mental state of affairs. In my opinion, the given information may not be enough for a proper diagnosis. But, I think your problem is not
depression, but disappointment. Your negative thinking and unnecessary thinking could be due to obsession with the disappointment happened to you, the reason for the disappointment.
Introspect, understand your disappointments, try to correct them. Interact with people, be active, play games, work well. Everything comes together to manage your disappointment.
If you require more of my help in this aspect, please use this URL. http://goo.gl/aYW2pR. Make sure that you include every minute details possible.
Hope this answers your query. Available for further clarifications.
Good luck.