huh? Money again?

This month i spent much money for many items that were not in my plan. And now, I just paid electricity bills, money for joining a community group, gas, etc and the remain is only $10. It maybe enough to buy food for 5 days when cooking. I am calculating about it because i will receive my salary 5 days later also. Suddenly, I heard a guy's voice who is my neighbor, he asked to borrow $5, he told me that he will pay back 1-2 days later. Huh? money again...i am headache with money now. But i know him...he never pay me 1-2 days later, he did ask to borrow me many times, and he did pay me at least 1 week after that. I am a soft woman, i never ask he pay me back when he borrowed me so that i am so confused now...if he doesn't pay me back after 1-2 days, i will have no money to buy food for some days. What should you do if you were in my shoes?