Why do i get severe anxiety and panic attack when my period is coming including vertigo attacks.

This may be a form: of migraine (vertiginous migraine). Hormonal changes trigger a cascade of events that result in acephalgic vasospastic migraine. There are ways to diagnose this: An EEG done in this critical period may show excessive vasoreactivity during hyperventilation. Typically this responds to anticonvulsant medication (as do most types of vasospastic migraine) I also recommend avoiding DHE and triptans