I Was Diognosed With A Small Goird In My Thyroid

I was diognosed with a small goird in my thyroid 2 yrs ago. the put me on generic synthoid 25mg. Each blood test came back normal but I was having problems, sick to my stomach, cant have a bowl movement weight gain.Doctor just ordered a sauna gram and found multible cysts on thyroid and on the goird 2mm . She is sending me to an endrocronologist??? What is going to happen. Is this cancer