This is obviously not normal. You should go to the ER immediately to get an X-ray of your leg first of all to exclude any fracture
because this is most commonly associated with excruciating pain like that you described as also a collection of blood or hematoma
. If there is a collection of blood and this presses on to the nerves supplying the foot then you would be experiencing the pins and needles sensation. The best thing to do at this stage is to get your leg splinted by anything like a small block of wood, elevate it for the time being and then go to the ER immediately. You can take analgesics to allay your pain.