Anxiety and hypochondriac signs? what do i do?

i have had anxiety disorder for the longest time now 6 years and medicine dont work for me i have tried and tried multiple medicines in the past and i have symptoms that come in viscious cycles. it never seems to stop or go away constant worry constant worry about health i always find something wrong wtih me and make alot of doctor visits i get symptoms like lightheadedness,trouble focusing and think i got brain tumor. i also get wobbly legs and shakiness that passes then a new symptom shows up like aches and sharp pains in groin and legs or upset stomach and i always think i have undiagnosed disease. i have had blood work done and get it every 6 months urine analysis as well and had both 1 month ago but i cant seem to ever relax or shake these crazy thoughts any help would be great i mean xanax takes the edge of but the symptoms make me just run wild and i dont know what to do this can last days on end at times i maybe have 5 days a month where i just feel somewhat normal... im 28 male 190 pounds and overall healthy according to doctor good blood pressure but the little things bother me any input would help.. does anxiety symptoms cause physical pain or vica versa? i have looked into this alot but its just debilatating at times. feels like anxiety mimics or plays tricks on the body.