What blood work should be ran for Thyroid?

I have a low thyroid on Levothyroxine 50mg for nearly 2yrs now but feels like someone had there hands wrapped around my throat having issues breathing and eating. The ultrasound tech said I have a small nodule and my voice box are is supposed to look smooth and mine looks like crumbled up paper not sure what that means. That was on Thursday so waiting to hear from the actual doctor. Says this blood work is fine but no clue what they were checking. I was there for my sore throats thats lasted since April and my throat swollen will c

Voice change. Some that Thyroid still pending mean I'm waiting on blood results? Or was he just reffing to waiting on the ultrasound. Sorry for being dumb I'm just worried is all.