What do these thyroid results mean? thyroid disease?

I been feeling like crap on and off. My tsh is .5 and the range is .5 to 4.5. Ultrasound says both thyroid glands are heterogeneous and enlarged with minimal vascularity. I have 3 lymph nodes in my neck that are also enlarged. And my thyroglobulin antibdies are 31. What does all this mean ? :(