Hi i am Dr Ahmed Aly  
  thanks for using healthcaremagic site ,
I had gone through your question and understand your concerns ..
     In ,y opinion i dont think you should worry , that is a kind of 
sciatica due to sitting alot on hard sufaces that causes pressure on your nerves coming from your spine it is common and increases with age and weight . avoiding lifting heavy object and spinal straightening excersizes and positions even while sitting and walking will be helpful .  
spinal nerve compression causes this kind of 
neuropathic pain due to disc herniation nerves going to your legs releived by relaxing , 
physiotherapy by your chirpractor , hot massaging your back twice daily with topical gels and even yoga , painkillers  like 
advil ,muscle relaxants are recommended if no releive happened the i would suggest my patients for Xrays and CT for proper evaluation  
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