I am 50 year old female. Woke up not able to get out of bed in december with heavy legs and arms. I was told I had a virus. now five months later I still have the same symptoms, now they say PMR. I am athletic and was running and lifting weights four days a week now I can only walk. stiffness and heaviness in arms and legs still and when I do sit ups I get extreme brain frost in the front of my head or when i roll back or go upside down. Taking lodine and now arthritis medicine but still no inmprovement. I was in great shape and I am thin before this happened. Advice?