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).
B vitamins helps tryptophan in your body convert to niacin and serotonin, which regulate sleep and increase REM. Passion flower is regularly added to sleep supplements or can be taken separately as an anti-anxiety. Chamomile tea (pictured) at bedtime soothes and calms, acting as a very mild natural sedative.