my gums just started swelling earlier today out of nowhere. i ate mcdonalds (im hungover, i'll admit it) and then came home, my friend picked me up, i drank a coke zero at wal-mart, then i noticed my gums in one area (right behind my two front teeth and ending by my canine) started to swell. i brush and floss everyday and i dont have any allergies, why would this happen? ive been trying to get in there with a pokey thing to see if theres something in there but so far nothing. its driving me nuts!