Hi, u seems to be suffering from a depressive episode with anxiety symptoms. Sometimes these could occur due to some medical illness like anemia, hormonal imbalances among many. Usually it is due to genetic problems leading to chemical imbalance in brain which added by life stressors would precipitate an episode. Good news is whatever may be the cause, these are treatable in most of the patients, either with medicine or psychotherapy. You need a detailed evaluation for physical and psychological problems you have bee through after which a specific treatment can be started. My advice would be to consult a psychiatrist or a family physician for evaluation and if needed investigations would be carried out and once diagnosis is confirmed appropriate treatment could be adviced.