Do you have a neuro that handles the vertigo along with your migraines.
If not this is one of the first steps I would take to find answers.

Migraine vertigo for me was and is different than other kinds. But the
other kinds were worse. SO it honestly doesn't really sound like you
have the balance and vertigo issues I had. That lead my neuro-opthamalogist
to sending me to a Physical therapist. For vertigo and balance issues.

This is what helped me the most for my issues. But I believe one of the
things that helped my doctor determine the need was the fact that my
symptoms had always been there. Since I was a child, and it wasn't
associated with a accident. It at times was associated with migraines.

But not always.

Donna