i would suggest you have this checked out by a medical professional. i don't think the symptoms you describe have anything to do with the injury to your toe. if the toenail had been severely injured it would have fallen off by now. otherwise any injured area probably would have grown out and been clipped off over the course of a year. also a toe injury on one foot obviously wouldn't affect the toe on the other foot. this tells me something else is going on here. and you'll need a physical examination to discover what that "something else" is. hope this helps!
i stubbed my big toe almost 1 year ago it is still black and now the big toe on the other foot is starting to get black. the toe nail is not complety black it started in the middele of the nail and goes toward the skin. i have tried to see if the toe nail would fall of but has not. the other toe know has a little black line in the middle of my toe just like the other one started.