Hi, Thank you very much for your question. Your symptoms could be due to anxiety, injury to a nerve, pressure on spinal or peripheral nerves (neuropathy), vitamin deficiency, lack of blood supply due to cholesterol plaque from atherosclerosis in the extremities, viral infection and use of certain medications. In addition, atherosclerosis can also cause pain, numbness, and tingling while walking and they can also reduce blood supply and lead to numbness. Please consult your doctor to get all these possibilities evaluation in your case for further assessment. Hope this helps.
If it is just once in a while, I would not worry about it. If it is daily and/or lasting all day long I would consult a Neurologist; could POSSIBLY be peripheral neuropathy.
Are you parents aware of your problem?