Okay so I was driving and my check engine light started flashing. I turned off my car and restarted it and got a solid check engine light. I pulled the codes and got a misfire on cylinder 3 and a DTC code. The engine runs fine at idle so i cleared the codes and drove the car. Everything seemed fine. I keep driving and about 5mins later it starts flashing again but this time the car felt like it was losing power and the engine started to sputters. I can't find out what it could be. By the way my car burns oil and a decent amount of it. I add a quart every two weeks. I'm hoping I just need to replace the plugs. But if anyone has any ideas or if this is a tale tale sign of a much bigger issue please let me know. The car is my DD and I need it on the road ASAP.