I'm a student in need of money to pay my rent

H, i'm a medical student in a university. I live in a flat and my contract is until end of august. I have had a part-time job throughout this year in order to be able to pay my rent however due to my final exams, I wasn't able to get as many shifts as i really needed to revise for them and therefore don't have the money to pay my rent. I approximately need $500 by end of this month. i would really appreciate any help!