Panic attacks happening when impatient

I always get panic attacks around this place where I bus over the bridge. It’s not the bridge that makes me panic but the fact that there’s a lot of traffic.

Before the traffic and slowness on the bridge would over stimulate me and make me super super agitated. It seems now that agitation has suddenly turned into panic and I’m not sure why.

Essentially any situation where I would usually feel impatient and frustrated with how long something was taking is now turned into panic. Any reason why this might be? Does anyone know how to cure this . I have generalized anxiety disorder but I never had a panic disorder or ever dealt with anything like it until this year. I have no idea why or how this happened and it feels like I’m literally living in hell . Desperate for any help