Neck ultrasound results

I am three year post TT with one of one lymph node that tested positive (papillary with a follicular variant). My last blood work was good TSH 0.296 Thyroglobuline, antibody <1.0, Thyrogloculine, Serum 0.1

My neck ultrasound came back with an unusual lymph node of .6 cm X .8 cm X 1.4 cm on the right side (opposite side of the thyroid cancer). My endo would like me to wait and retest in 6 mos. and do new blood test with stimulation.

This makes me nervous. I am 54 years old and not sure if I should be more aggressive, but don't want to over react either. Any opinions?

Thanks for any information!