My God that's tough. I'm so sorry. I wish I knew what to suggest.
I won't give you a glib answer, because I don't have one. You know that what you did was foolish, but I can fully appreciate the desperation behind the act, particularly in most of the western world, where the last few decades have seen the rolling back of safety nets and the onset of real poverty.
I have not much to offer, but I give what I have willingly, namely my words of encouragement and sympathy. You are clearly not a bad person, just one who has unfortunately fallen into a rut, and if there is any justice in the world, someone will show you an act of compassion and kindness. You don't deserve to be in this predicament, no one does.
If you don't mind sharing, it may help people to know roughly wich part of the world you come from as welfare provisions do differ. Hopefully someone near you can offer some help. As a student I currently have limited resources, but if you were near me I would try to find you some source of practical assistance if I could.