I got a lrge tattoo on my foot a week ago. It hurts when it isnt elevated. I have poor circulation and immune system from anorexia. Is my foot ok?

What are you doing? You should be concerned about your eating disorder if it is affecting your circulation. I hope you are seeing a psychiatrist as well as internist and dietician. Getting a tattoo is one of the worst things you could do with impaired immune system. I advise a comprehensive eating disorders program to help point out your self destructive behavior and learn healthier alternatives.