The incidents happened to you would lead to depression and make you sad if your self concept is low. Nothing much to worry but counselling to come out of is very much necessary. Do get a counselling to make your mind feel better. Try to be more confident. Suiciding is difficult. Living is more easier than it. Also you can get online counselling.

Feeling low, having crying spells, sleep and appetite disturbances, and difficulty in concentration and attention are some of the signs of Depression. Consult a Psychiatrist for a detailed assessment. It is likely with medication and counselings the symptoms will improve. If you are feeling suicidal or hopeless consult a Psychiatrist immediately.

Firstly think that nothing can be important than your life. First of all stop these feelings then arrange a counselling session for your self you will get the rid of your distorted thougjts.