Hi, I have been suffering with what seems like anxiety for 12 months, the symptoms are:shaking legs, nausea, loose stools and fast heart rate? Anxiety?

Probably. The physical manifestations of anxiety include symtpms such as nausea, cramps, butterflies, diarrhea. Symptoms dizziness and lightheadedness, shakes or tremors, blurred vision, dry mouth, sweating, hot falshes, chills, wobbly weak legs chest tightness ANS shortness of breath , tingly sensations and vomiting. One has to be medically evaluted by psychiatrist to rule out other medical issues.
Anxiety? Possible, but first need to rule out medical causes for the symptoms, thru thorough physical exam & labs.