It was raining cats and dogs today when i left my house for work. About 3 miles up the road my car started what felt like catching through 5th gear. When I let off the gas it would catch every few seconds like like I was in a lower gear. Then every time I would shift gears my car would either cut off or almost cut off and go to 500 rpms quickly. I had to ride to work in 4th gear thank god it's not that far. My car was literally cutting off while it was rolling down the road. But starting right back up and running as long as I kept my rpms up and didn't push the clutch in. WHAT COULD THIS BE????