As Pmintz25 indicates, sub-model is critical as there are MacBook pro sub-models with known serious--sometimes fatal--problems.
First, from another internet device, use this Apple article to find your MBP serial number:
How to find the serial number of your MacBook Pro - Apple Support
Once you have it, enter it into this Apple support page:
https://selfsolve.apple.com/agreementWarrantyDynamic.do
The page will return something like this:

Respond to your own thread with what the first line reads. If your MBP is too old for the Apple page to work, you can find a simialr function on this third-party web page (click the blue letters):
lookup Macs by serial number
Once we have that we can better advise you on a course of action. Some models with problems may still qualify for a free reaip, others not.