Anxious in AM since thyroid problems

I have been suffering from severe anxiety the first thing every morning for the last few months. It was first triggered by my thyroid being off, but now my thyroid is back to normal levels again, yet I'm still anxious. My endocrinologist said I should be feeling better, but I'm not. She gave me Ambien to help me sleep & Xanax to calm down, but it feels like it's only masking a problem that's not going away. Help! I feel like I'm cracking up! Any insight would be a great help.