Don't take your cat to the Vet. It needs $50 in herbal medicine.
1) No more grain food. Cats are carnivores not omnivores. They can eat only meat plus some incidental herbs. Spend extra and get Blue Buffalo Grain Free food (this cured my cat from throwing up).
2) Buy Valerian Root Capsules (these are good for people too - heals the nerves). Cats treat it like catnip. Open one up and sprinkle on it's toy or food.
3) Start putting Apple Cider Vinegar (Bragg, Raw), $5.99 for a large bottle on her food or fur. Cures fleas and is a healing tonic for cats and humans.
4) Organic Chlorella tablets (on Amazon, Natural News store brand is best). These are good for people too. Hide them in their soft food and they eat them. Or get Barley Cat to sprinkle on (they love it!)
5) From now on, only Reverse Osmosis Water (from the Glacier machines at the grocery store, costs 30 cents a gallon. Buy a 3 or 5 gallon BPA-free jug and refill them). You should drink that water also.
6) Add some high quality Olive Oil to her food.
7) For canned food, only Tuna in water (I recommend Sustainable Seas Yellowfin brand with no salt) for a while. NO generic cheap canned food - it contains Melamine and is from China and is killing our pets. Phase out any other canned food.
8) Raw food diet - very important - cats need raw meat. It comes frozen and you thaw little portions as needed. Start with raw chicken (they only eat organic, they know somehow). It's good if they eat small bones.
9) Fresh organic catnip (but avoid toxic toys from China - they end up eating them and getting poisoned).
10) If it has fleas - treat place with food grade Diatomaceous Earth for 1 week.
11) Have some fresh ferns and plants (but not lilies or other cat-toxic plants) and make sure it gets sunlight every day. Ideally let it out to chew on plants.
12) NEVER declaw a cat (barbaric). It's like clipping off the first joint on your fingers without pain killer - all 10 - at once - to save your ****ing couch. Then they can't groom themselves.
13) Brush the cat with an old boars hair brush.
These simple steps will keep your cats (and yourself and dogs) super healthy for life and will bring great relief in the short term. Your pet will know and will shower you will affection and become super soft and shiny. Oh yeah, and you should follow the same diet including grain free.
Vets will just vaccinate it, medicate it, give it toxic "Advantage" flea medicine at $10 per dose, bully you into getting heart worm medicine, give it antibiotics it doesn't need, chip it with a cancer-causing device and charge you $300 and then nag you to come get "boosters". Neither of my cats has ever seen a vet. If you PM me your address I can help you get this stuff if you can't afford it.