Hi and welcome!
I get migraine pre-dome symptoms. I have had vertigo, the speech issues, floating/disconnection, nausea...and then I may or may not get the headace...
For me, I am not sure if anxiety is related or not. I mean I certainly have had anxiety without the migraine/aura present...
...but whether there is a connection with some people having both issues in common? Perhaps. Although I know people with anxiety who don't have migraines...and vice versa.
As far as coping with the anxiety, there are a lot of things that you can do without meds if you are seeking to try alternatives first.
It is great that you are seeing a therapist! Can you ask about
CBT techniques for anxiety?
We also have great Resources here (see link below) with amazing coping suggestions for anxiety and panic...take a look and try practicing the breathing, meditation, progressive muscle relaxation, ect...
https://www.healingwell.com/community/default.aspx?f=9&m=104206
Also check in with our Depression and Migraine forums for getting a wide spectrum of advice for the challenges you are facing.
Great job on reaching out! I encourage you to post with us anytime.;) We understand and care...and support is key!
Scaredy Cat