Have your physician palpate the pulses in your feet and behind your knee. If these are normal, then you do not have a significant vascular obstruction. I suspect that your symptoms are caused by damage to the nerve from the herniated disc, but there's a very, very small chance that you damaged the artery to the leg during your fall. Thus, you should still see your physician, but I don't think you have anything to worry about. I hope you find this information useful.
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