Sciatica Pain, Pins and needles. To er?

I have had TIA at 19 yrs old and heart surgery PFO closure. I had surgery to repair ruptured achillies tendon. I also have scoliosis which causes lower back pain accompanied with sciatica to left leg. Today i expirienced pins amd needles on both arms and back of meck suddenly walking home which worries me because i had TIA in past its very scary thinking its happening again. Is this an emergency should i go to ER? Your professional opinion would be greatly appreciated. I also like to know on how i can get refered to pain specialist my sciatica has been flaring strongly recently and intense paralyzing pain. I am limited to pain medication thats over the counter because i have allergy to all NSAIDS, leaving me with just acetaminophen which is basically sugar pill for my pain. Help on either of two issues is needed Doc, please help