Normal thyroid test but have antibodies?

I have always had a swollen thyroid and have been tested for it with normal results.. I've always been prone to anxiety and panic attacks, but in the last month they've been so bad I feel out of control.. My doctor put me on anxiety meds and tested my thyroid and did a full panel this time.. My results were all in normal range except I had high antibodies.. I think the numbers were 286 for the antibody.. Anyone have experience with this and does anyone think this could be causing my anxiety?