Severe pain behind my left hip which radiates down my leg.mucus constipation. dizzy and loss of focus.. history of blood clot and family cancer.

Sciatic pain: Symptoms typical for impingment on sciatic n. causing pain radiating down leg. If this is a disk problem then other symptoms unrelated. At times problem is in pelvis deep to hypogastric vein where schiatic n. roots form main nerve passing thru s .notch. History of blood clots and cancer suggest pelvic side wall lesion impinging on nerve to cause pain. Pelvic CAT may help R.O. lesion