Swelling/Puffiness Inside Cheeks & Sour/Sweet taste after

Hey,

I've noticed that almost every time I eat--mostly eating carbs or sugar (not exactly sure)-- my cheeks around the lower part of my lip tend to get pufffy/ swollen. It's is not that noticeable but I can sure feel something wrong--especially the bitter/sour/kind of sweet taste that comes with it--almost like if you had just eaten hot sauce or something. However, my mouth isnt dry--its almost always producing, what i believe to be, a good amount of saliva.

I can usually just wait for the "swelling" to go down, or by drinking a lot of water and eating fruits.

Any ideas? Thank you