1994 Toyota Corolla Engine light

On Monday after I poured gas in the station my car started jerking with the engine light flashing and the car switched off.I parked I started it it drove for 10minutes and jerked again and switched off.I went back to filling station to check what gas they poured and replied with the one I asked for.I drove back home and parked, the next morning the car would not start the engine light (orange) wont come on.I called in a mechanic as he arrived I tried to start it light came on. He left and I used the car the whole day. This morning before work I tried to start the car and the engine light was off so the car wont start I am hoping later it will be on and the car will start. What could be problem as I have checked the fuses all okay