Full thyrodectomy suggested

I’m 8 months postpartum and recently found a nodule on my thyroid. It’s growing rapidly (which I believed was coz of postpartum hormones) but my provider doesn’t think so.

I got ultrasound done (nodule TR-3, 3 cm large) and fine needle biopsy done. The results of biopsy were indeterminate

Even with indeterminate results and just by looking at the ultrasound images my doctor is recommending to remove the entire thyroid (a total thyrodectomy) I don’t know the details yet coz I just received this call and was asked to come in today and discuss it in person. I have an appointment later today.

Is this normal? Can they just look at ultrasound and make a diagnosis and decision? Even when the biopsy was indeterminate?

What should I do? I’m spiraling and my ENT had already referred me to the surgeon. No one seems to be interested in more testing first