My cat Peeta is almost 6 months old and just yesterday I noticed that he seems to have a swollen bottom lip. At first I thought maybe he just has a big bottom lip that I never noticed but I'm pretty sure it is not supposed to be that big. I can't call his vet until morning and he seems to be fine... but I am still worried. I read somewhere that it could be an allergy? He just got treated for fleas , fixed, and a micro chip implant 8 days ago and today I took him to the groomer to get his nails cut for the first time and I also had him get an all natural citrus based flea wash to make sure they are taken care of, could any of these things cause it? And will he be ok till morning? I hope so, I'm going to worry all night regardless...