Hi. From what you have mentioned, it seems your problem is twofold. One, you have symptoms suggestive of depression. In addition, you also have personality traits suggestive of dependency and emotional instability. Considering the fact that you also have suicidal tendencies, you should seek help at the earliest. Please consult a psychiatrist and get yourself evaluated completely. Accordingly treatment can be initiated. Treatment will aim both at depression as well as underlying personality traits and constitute of both medications and psychotherapy.
Next Steps
Seek a psychiatric consultation.
Health Tips
Start exercising daily. Start writing diary daily in order to vent out your feelings and emotions.