I Have Been Having Pain In My Right Leg--back Of

I have been having pain in my right leg--back of my leg and radiates up through my hip and down to my foot--numbness and tingling--worse after exercise. Used to be able to walk three miles--nowd pain after 1/2 mile. Went doctor last week; mild arthritis in my hip--took toradol for 5 days--no improvement. Back of my left leg is bumpy with hard nodules--varicose veins or DVT?? My leg does feel heavy but there is no swelling or discoloration.