Thyroid ultrasound result

Good Morning,

I have a palpable lump on the left side of my thyroid so my Dr. sent me for an ultrasound. I did not have the kind where you are injected with dyes. During the ultrasound Friday there was a large solid red area that seemed to be where the lump is and on the other side of my neck there were grey and blue/red speckled areas. Is this normal? I have lost about 30 lbs since last year and when I exhale I can feel something in my throat that feels like flapping.

I read in one article that red is often a sign of malignancy but I was not sure what type of test they were talking about.

As an update, I received my TSH tests and everything was normal but my ultrasound has come back with a 0.9 x 1.0 x 1.4 cm heterogeneous nodule observed in the inferior body of the left lobe. Two small nodules are noted at the right lobe measuring 2.0 mm and 4.0 mm. Right and left lobes of the thyroid gland measure 5.3 x 1.7 x 2.3 cm and 3.9 x 1.4 x1.6 cm. The isthmus measures 4.0 mm thickness. I have been recommended to see an ENT. Immediately. Should I be concerned?

I read in a few sites that if there is more than one nodule the odds are that it is non cancerous. I have also read that if the nodule is more wide than tall it is more reason for concern. I am getting really confused now.

I thank you in advance for any information you may be able to share. Kindest Regards.