My son had an allergic reaction a few days ago from pizza, he's allergic to sea food. We always eat pizza but we ate at a off brand pizza place which caused him to throw up 1st then shortly after his left eye was swollen really big I gave him kids benadryl the next day it went down. Now today out of no where his top lip, right in the middle is swollen really big I have know clue what it could be so I guess my question is do you know what's going on wit him? Or what should I do?