I'm sorry you lost your girlfriend and friends,i understand how difficult it might be,and the fact that all comes just within a month must be so overwhelming.I hear you.
Usually when we are in pain we can't think that it might get better with time,we think we stuck in that dark place forever but that is so not true is just ,another lie of depression.Be gentle and take care of your self, and if you think you not cooping please reach out for help!!