I pulled a hangnail off my big toe over a month ago. the toes is still tender and puffy it just won't heal?

You nailed it.: The hangnail incident has escalated the problem. You are probably developing cellulitis with a possible ingrown toenail. Time to sop the baloney and have it examined by a specialist. I am assuming that the non-healing concern is due to the nail and not to some complicating issues such as diabetes or vascular disease.

Cause you: likely have an infection and didn't get the whole nail out..see a foot doc…bathroom surgery is not recommended.