Money for food and bills

I have been paying off my student accommodation from last school year as well as paying my bills and rent for the current year. This meant that I ran out of money for food almost three weeks ago and I am short on my bills, I wont be getting my next student loan installment for another three weeks, six weeks without food isn't great, I have already lost 2 stone making me underweight. I have no family or friends that could help and this is my last resort.