I get leg pains and leg cramps to the point I limp

[[Di...]]

Back in August I was in month two of walking on treadmill and all of a sudden after I walked my two miles I would experience pain in my upper legs and 

cramps in my thighs and I had to stop walking on treadmill.  I was positive I had blockages in my arteries and convinced my Doctor I needed to be tested.  

The test was done and no blockages, perfect circulation.  Once I stopped exercising no more pain or cramps.  Today the pain and cramps appeared, and I hobble.  

I did walk on treadmill four days ago.   I am cutting but ever so slightly.  I read a post dated back in 2013, a young man experienced the same pain in his legs.  

Oh, my goodness.