Thyroid Problems Just Found Out Dec 6th - 7th When

Thyroid problems just found out Dec 6th - 7th when my scans were done that I have a hyperactive thyroid but there is a cold nodule on my right side of my thyroid and I'm scared that it might be cancerous I have a biopsy coming up soon, but I haven't had zero signs of it being cancerous it's only like one centimeter that's it my neck hasn't swelled or nothing eating is getting better but tired and weak most of the day and it likes the heat and showers which makes no sense to me and my fiancé