Hi MrsBro. Welcome! I'm really sorry you're struggling with anxiety and panic attacks

What you describe here about experiencing something which feels like a mild panic attack that lasts for hours is very familiar to me. And to many others too, I'm sure. You're definitely not alone
I think it's a positive thing that you have only recently begun suffering from these problems because that will make it easier to recover than if they'd been a pattern which had taken hold over many years. I hope you're able to start working with a therapist very soon.
I'm a big believer in the benefit of daily exercise and I also do some meditation every day. Perhaps you could look into downloading some relaxation CDs to see if that would help?
Let us know how you're doing (((((MrsBro)))))