i have pain in my left upper outer thigh area when i try to stretch it out. it only occurs when i try to stretch it out...any so

 It sounds like you might have either strained an abductor muscle or possibly have irritated your  IT band (illiotibial band) syndrome, a fascial sheath that runs from your hip to the outside of your knee. Palying football can lead to a tight or inflamed IT band. I recommend gentle icing, resting and elevation. Once the pain decreases, try some gentle hip-opening stretches. 

You might try some over the counter pain relief pills.

Check with a doctor for a correct diagnosis.