Large Toe Bruise After Hiking: Causes, Symptoms & Relief

Question
I WENT HIKING ABOUT ONE MONTH AGO(I AM NOT SOMEONE WHO USALLY DOES THIS)IT WAS MOSTLY DOWNHILL FOR MY BENEFIT AS BEING OVERWEIGHT UPHILL IS IMPOSSIBLE FOR ME.I WORE TENNIS SHOES AND WHILE WALKING DOWNHILL I COULD FEEL MY LARGE TOE CONSTANTLY SLIDING TO FRONT OF SHOE .ABOUT HALF WAY THOUGH THE HIKE MY RIGHT AND LEFT LARGE TOES WERE EXTREMELY SORE BUT WE HAD ABOUT ANOTHER HOUR OF WALKING ,MY LARGE TOES KEPT SLIDING  AGAINST FRONT OF SHOE AND AT TIMES I HAD TO BEAR DOWN ON MY FRONT TOES JUST TO KEEP FROM FALLING FORWARD DURING HIKE.THE NEXT DAY MY LEFT TOE WAS ACTUALLY ACHING AND EXTREMELY SORE AND TENDER I COULD HAVE NOTHING TOUCH IT .MY RIGHT WAS NOT AS SORE.ANOTHER THING I REALIZED WHILE WALKING I STEP WITH MY LEFT FOOT SO MORE PRESSURE WAS ON IT DURING HIKE.ABOUT I WEEK AFTER HIKE MY TOES UNDER NAIL WAS VERY RED,MY LEFT TOE AFTER ABOUT 3 WEEKS AND NOW IS ALMOST BLACK. MY OTHER TOE WHICH WAS NOT AS SORE FINALLY NOW LOOKS NORMAL. MY THINKING IS I HAVE INJURED MY LEFT TOE SO MUCH THAT I WILL LOSE MY TOENAIL. WHEN I TOUCH IT IT FEELS SHAKY.SO I DO NOT TOUCH IT. IS THIS SOMETHING THAT I SHOULD LET HAPPEN NATURALLY,SHOULD I GO TO THE DOCTORS,IF MY TOENAIL FALLS OFF WILL ANOTHER ONE REPLACE IT ,AND IS THERE ONE GROWING UNDER THIS ONE THAT FEELS SHAKY,WILL THE NEW TOE NAIL LOOK THE SAME.RIGHT NOW I HAVE POLISH ON TOE BECAUSE IT LOOKS SO AWFULL,IS THAT A GOOD OR BAD IDEA.PLEASE HELP.

Answer
IS THIS SOMETHING THAT I SHOULD LET HAPPEN NATURALLY,SHOULD I GO TO THE DOCTORS?  Usually they fall off without help from a doctor but if not it usually is painless for the doctor to clip the rest off. OK?

IF MY TOENAIL FALLS OFF WILL ANOTHER ONE REPLACE IT
Almost always it will be replaced with a normal nail.

IS THERE ONE GROWING UNDER THIS ONE THAT FEELS SHAKY,
Yes, that is why the nail feels shakey since the root is no longer attached.

WILL THE NEW TOE NAIL LOOK THE SAME.
They usually look the same.

RIGHT NOW I HAVE POLISH ON TOE BECAUSE IT LOOKS SO AWFULL,IS THAT A GOOD OR BAD IDEA.
That is OK, but if you soak the foot in hot soapy water twice a day the nail will come off sooner leaving a dry hard base that you can paint until the new nail grows out. OK?

PLEASE HELP.