Why is this happening?

I have owned my car for over a year now. I bought is used, and I admit, it's no where near my dream car. But it's affordable and gets me to and from work. I haven't had many problems with the car. The biggest being about three months after I bought it, I had to replace a wheel bearing, but I bought a warranty that covered most of it.

Recently, that's changed. In September, I had to get a new windshield because a construction truck threw a rock at me and created a 12 inch crack on the passenger side. I got that fixed. Insurance covered some of it but I still had to dish out $250.

Now Wednesday, my check engine light come on and hasn't gone off. I'm not going to be Penny from the Big Bang Theory and ignore the problem. I have an appointment with the car dealership in Cedar Fall where I purchased the car from this Friday so hopefully they can fix my problem and not have it cost too much. That warranty may be worth every penny I paid for it. So here's hoping for a not a huge bill fixing my car.