Hello. I just bought an automatic 2006 honda accord a little over a month ago from a buy here pay here. I was on my way to work the other day which is essentially 2 blocks away. I stopped and turned off the car but when i got back in to leave i backed out of the parking spot, went to put the car in drive and it didn't move, tried putting the car back in reverse and it barely moved but then stopped doing that. When i put it in park it makes a loud grinding noise. What are possible problems and fixes? I know nothing about cars other than how to check/fill liquids and change tires. Thanks for any help.