Car makes a "chug chug" noise

I was driving to class last night and was stopped at a stop light. When I pressed the gas to go, my car started making this "chug chug chug" noise and shaking. It felt like I had a flat tire. I pulled over and checked, and there was no flat. When I turned my car back on to continue, my check engine light started flashing like crazy and the car was still doing the "chug" thing and shaking. I made it to class (I was right down the street) and called AAA and got towed home. I have no idea what it could be. For background, the car burns oil real bad but I just put oil in it that morning, I had just gotten gas that morning, and the hot/cold gauge didn't move the whole time this was happening.