S.S.
I would wait. My husband had thyroid cancer which we found out it was cancer from a 'fine needle aspiration'. You said he did a biopsy but to find out for sure if it is cancer and which kind, you need to have a radiologist do the fine needle aspiration. That should be safe while you are pregnant as you are fully awake. I think my husband had this for years and like Hollie wrote, most kinds are fully treatable and curable. There are 5 kinds of thyroid cancer and most are fully curable and there is no huge hurry if you don't have other lumps in your neck where it is spreading. Send me a msg. if you have questions. I would definately ask for the fine needle aspiration test. My husband said it pinched but wasn't too painful and then they had a sample to know for sure that it was cancer and what kind.
Sending prayers your way!