Moving cheek swelling and numbness

[cypress16]

I have swelling and numbness inside my cheek near my mouth that started yesterday at work.  Yesterday it was above the left side of my mouth inside and eventually went away by late evening.  Once I got to work today, the lower left side of my mouth began to get numb and swell.  Looking inside my mouth at the swelled area, I do not see any discoloration.  It's solely a swelling and numbness that was above  the mouth yesterday and today is below the mouth on the left side.  I always eat breakfast cereal with soy milk each morning and these days were no different. I also drink coffee in the morning.  Any ideas on what this could be?  

[stacia123]

I had swelling in the left cheek a few years ago, and again just last year.  The first time it was stones or a blockage in the gland that's inside your cheek (you can feel it with your tongue, it's kind of a flap in the middle inside of the cheek).  Antibiotics usually clear that up.  The second time it was a slightly infected scratch on the inside of my cheek, and it cleared up on its own.  Sinus infections can also cause swelling, and I have read allergies can as well.

Sorry this isn't more specific, but maybe this will help.