What Causes Shocking Pain In The Inner Thighs While Sitting For Long Periods?

HI I M ABOUT 40 YEARS OLD MY JOB IS A SITTING JOB MORE THEN 13 HOURS IN A DAY AND THERE IS NO OF EVEN IN A YEAR LAST TWO MONTH I FEEL SHOCKING PAIN IN MY LEFT SIDE THI NORMALLY ITS OK BUT SOMETIME SUDDELLY I GET SHOCKING PAIN INNER SIDE OF THI AND ITS SHAKE ALL MY BODY