What Causes Blood Blisters On Toe?

HI I HAVE A SMALL LOOKS LIKE A BLOOD BLISTER ON MY BIG TOE!! ITS ABOUT 3MM IN SIZE AND ROUND LOOKS DEEP RED IN COLOUR, I HAVE BEEN TO A COROPODIST AND SHE SAID SEE DOCTOR ABOUT IT!! i CANT REMEMBER BANGING MY TOE BUT I DID HIT ONE OF MY FEET A COUPLE OF WEEKS AGO BUT CANT REMEBER WHICH ONE!! IT IS NOT RAISED AND NOT SORE LITTLE WORRIED BUT IM STRUGGLING GETTING AN APPOINTMENT IM 30 AND HAVE BEEN READING HORROR STORIES ON THE NET!!



THANKS HOPE YOU CAN ADVISE ME