Thigh pain. Any medicine. please help.

Good Morning sir, I had a thigh pain for the last 20 yrs. My daily work involves walking and standing for couple of hours. During the day time specially when I am moving I don't feel pain but during night and during rest i.e during laying in bed I feel sever pain and if some weight or somebody press me I feel relax. I am not taking medicine for it. Also during winter I feel very cold in thigh compare to other parts of the body. Another my health issue is that I catch cold very fast. Little climatic change make me cold even in summer when I sleep directly below the fan I will have cold. Usually I got cold in the morning and at night. I usually take D-Cold and other form of antibiotic for cold which will cure for some days but it will again come. Some doctor told me it is cold allergic. Please suggest what to do. At present I am doing no treatment for the both and I am not taking any medicine. Please help.