Hi! So my cat has had problems with throwing up and loose stool. Recently it's gotten better but I've noticed that her gums are lined red. She is only 1 years old. I have spent so much money on her! Do I have to bring her to the vet for this? I have recently started brushing her teeth and giving her dental cat treats... I previously felt bad brushing her teeth because she had big ulcers on her lip. I have attached a picture of her teeth and gums.