I have two 3 year old cats Coco and Mimi, and I'm currently free feeding kibble and wet food twice a day. I know bad cat mommy. A few weeks ago Mimi started throwing up right after eating her wet food (fish). She was fine when I fed her chicken or turkey. I stopped getting them fish for a few days and tried it again thinking I could've been a bad batch. I went to a different store and got the same brand and same flavor and she was fine. I ran out of the fish flavor and kept feeding them poultry. Well, I went back to the first store where I got the cans that made Mimi throw up and both cats started licking their lips and shaking their heads after that. It has been 3 days since I stop feeding them the fish flavor and they are still licking their lips and shaking heads. I'm not sure what this could be. I tried to give them Pepcid and it helped for a few hours and then the lip licking came back. I'm really confused about this. Could this be allergies?