Right leg inner pain from thigh to heel.

I have thigh to heel pain sometimes when i am standing for few minutes. It's not a severe pain...but i m feeling a sensational pain throughout my leg only right leg.now a days i am feeling pain on my heel of right leg. When i stretch my leg that time i feel pain on my inner muscle I regularly go for exercise running in the morning. After few minutes of running and exercise i feel no pain sometimes thn again starts inner pain in the right leg muscle from thigh to leg, sometimes i feel pain when i seat on chair but very mild. What is the reason for my leg pain...is there any remedy??? Should i go for doctor or not?? Should i continue my exercise amd running??? Sir iave no problem with my left leg. I don't experience pain while sleeping Sir this happened 4 months ago...first i thought this would be okay in time from exercises but problem is still continuing Sir is this for sciatic nerve pain or anything else ?? sometimes i feel on my lower leg little bit numbness. Sir What should i do?