I have been using the lightstim home held product.  After a few months, I began to get swelling under the top of my lip.  The pain was bad and the welling was painful.  I have gone to every doctor to see if it was an allergy to food or ???.  I stopped using the light stim and the swelling and burn is slowly getting better.  I am very afraid of using this product again.  Has anyone expierenced...