Extreme anxiety, just need reassurance

I'm having major anxiety, more than normal. I'm out of klonopin which doesn't work anymore anyway. My psych no longer takes my insurance so I'm in between doctors. I do have an appt with a new primary care doctor but not for 10 more days. In the meantime I'm really struggling. My mind is racing, I don't trust myself because of how delusional and intrusive my thoughts are, if that makes sense. I just feel unsafe and full of dread and like there's weight on my chest. I try box breathing and other breathing techniques but focusing on that actually worsens my anxiety and makes my heart race.

Basically I'm just looking for reassurance that I'm not going to die or lose touch with reality. I'm 33 but a lot of the time I need another "better" adult to tell me this as I'm not good at self-soothing.

Edit: I'm also having bad anxiety when driving or thinking about having to drive. Unfortunately I don't have a choice as I have to drive across town twice a day.