It’s a possibility, and that’s the easiest thing to check. Just get labs done and find out for sure. If it’s not, keep asking questions of the doctor and get to the bottom of it ~ too often after we have Graves’, our doctors check thyroid levels, announce, "normal," go home, you’re fine! And we forget to turn it back on them ~ I’m NOT fine. Help me find out why. Good luck, let us know how things turn out!