Good morning. last month they made me an us and reported that they found hypervasular thyroid nodule (0.9 x 0.8mm) and the nodule is hypoechoic. is it something i should worry about?

Thyroid nodules are not uncommon. Not all nodules are dangerous, or cancerous. This may be a little on the small side for a biopsy which often is the only way to know for sure. Speak with your doctor and ask their opinion. I personally would not be that worried about one small nodule under 1cm in size. They may also suggests other imaging such as with nuclear medicine imaging.

Yes. Discuss with your Dr there.