Can you walk around with a pulmonary embolism for weeks months or is it anxiety related?

Not anxiety related. But could create anxiety if you knew how dangerous it is to ignore this. You conceivably could have pulmonary embolus with minimal symptoms, but the question is from where did it come, and is the next one going to be fatal. This is not something to fool around about. Life-threatening condition.
You can.. You can walk if you are not short of breath and no chest pain. Smaller the pe lesser chance of complications . Make sure you are on blood thinner.