When you first get your braces on, your teeth will hurt for a few days, as they will every time you get your braces tightened or your wires changed.
Chamomile is also popular for anxiety in children. Fennel. Fennel isn't for anxiety specifically, but it is linked to treating some of the most common symptoms of anxiety, including digestion, coughing (many with anxiety have a nervous cough), and asthma (anxiety can exacerbate asthma symptoms).
You can put a few drops of essential oils made from these herbs in a vaporizer to provide some calming aromatherapy for Fluffy. Other calming herbs such as ginseng, kava kava, valerian, St. John's wort and skullcap also may reduce your cat's anxiety. These herbs usually are available as supplements you can give your cat orally.