Hi... Welcome to healthcare magic.. I understand your problem.... Leg pain without over working that may be because of diabitic neuropathy... In diabetic neuropathy tingling sensation and numbness occurs... Avoid alcohol drinking and smoking... Anemia also cause weakness and fatigue after working...Do a complete blood cell count.. Peripheral artery disease may ruled out.... Deep vein thrombosis cause leg pain and fatigueness.... Any muscle or tendon injury also cause this type of symptoms.. Mention a intensity and duration of pain with aggravating factor... Detail history and physical examination give exact idea... Consult a physician for further diagnosis.. MRI can done for further information... I hope my guidance helpful to you... Take care... Thank you.