damaged muscle?

It feels as if I've somehow damaged a muscle in my thigh following a ride I did on Sunday.
Looking at this diagram http://www.bodybuildingforyou.com/exercise-workout/leg-muscle-exercise-anatomy.html It's somewhere in the Vastus Lateralis region.
The area feels generally 'warm' 'tingly' and occasionally 'pings' - I can't say I'm in any major pain or discomfort from it, but don't want to over-stress it and potentially do more damage.
Suggestions appreciated on treatment or thoughts on what I've done.
Looking at this diagram http://www.bodybuildingforyou.com/exercise-workout/leg-muscle-exercise-anatomy.html It's somewhere in the Vastus Lateralis region.
The area feels generally 'warm' 'tingly' and occasionally 'pings' - I can't say I'm in any major pain or discomfort from it, but don't want to over-stress it and potentially do more damage.
Suggestions appreciated on treatment or thoughts on what I've done.
Cycling weakly
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Again, any suggestions out there welcome!