Help

I was on my standard 13" white Macbook, and I accidentally bumped it, which caused it to spontaneously and immediately shut off. After I turned it back on, the charger was broken. Later that day, I updated the software and the charger worked but a few hours later, I was moving from my desk to my couch and when I sat down, the same thing happened, and the charger doesn't work.
Help me please I dont have much battery left!!!!!