Is this anxiety or stress?

Anxiety & stress have pretty much the same symptoms, its just that anxiety occurs in anticipation of an event & stress as a result of it. What you have described are common symptoms of either, but they could just as easily be brought on by a cold or a virus. Possibly the toothache triggered your body's immune system & it may still be dealing with something as a result, but if you have other issues which cause anxiety or stress, these could prolong the symptoms initiated from a physical cause.