My right eye and cheek twitch intermitant for the last 6 mo. is this anxiety, stress?

Could be: It could be stress related . It could be as part of benign tremor . It could be sign of some other illnesses . What determine the nature and the cause of your twitch is to have a good history , physical examination with special emphasis to neurologic examinations . The course of your illness is most important ( whether progressive or static , associated other symptoms etc).

Myokymia: Eyelid twitching, or myokymia, is a benign but annoying condition. Reducing your stress and reducing caffeine intake make help.