You can find a generic OBDII reader for as cheap as $20 now-a-days. I would look into that if I couldn't just go down the street for a free read.

 

Please help me ! My engine light just came on. I had my oil changed a couple of days ago. Today my engine just came on.

 

Welcome to the fourm CarolAnn,
First post and you have an engine light. Sorry to hear that.
More info would help, but really you need the reader, or someone who can read the code for you.
Like was said earlier, some auto parts stores will read codes, hoping its an easy fix and you buy a part from them.
Or, it might be more complicated, you might need a real mechanic.

Good luck, please let us know what the code is, so we can help diagnose, or at least make suggestions.