Am I suffering from depression?

I’ve just graduated from a primary school to a secondary school . Everything gone well until I started to go in a relationship with someone from other school .
We were happy back then but I didn’t feel comfortable with the relationship because he silent himself from me like 2 weeks . I felt curious , so I asked
Him if we were still together . A “ NO “ replied he gave me . I broke down after that . In class , I didn’t tell anybody about that except one who saw me writing bad stuff about him . I mood swing-ed a lot till I even bossed my friends around . They were mad after that . They even don’t talk to me until now . Even my best friends avoided me . Because of them , I was too sad till I cut myself with a penknife . Im seriously becoming an emo because of my friends . What should I do ?
I don’t even there to face my counselor at school and talk about this .

yes I am sorry to tell you this but you are indeed depressed... I am also one that well is in a deep depresstion a lot of the time.. I give you soem help to what makes me happy.. take a walk.. I love taking walk alone I well get a lot out of my mine I can think about happy times in my life things that made me happy.. try doign something you realy love to do... I am a romantic so sometimes jsut for fun I make a date with my self .. candle's and dinner by my self.. works geart when you luaghing really hard becuase you having a dinner with yourself.. sometimes.. I just look up jokes online make my luagh.. whatever on this earth makes you happy.. I am a druid so I heal others that are sick.. that makes me happy to heal others that are hurt and sick makes me feel like I am helping others.. . how aobut goign to a summer camp and working there and help campers if they would allow it.. try new things... cant hurt to try something