Has anyone else had anxiety so long that it affects your health? And if so, in what ways?

Mine makes it hard to do anything besides lay down. I work and run errands and go out for walks and am relatively active but no matter what, there's anxiety there and I end up with this tight feeling in my chest. I get dizzy sometimes, nauseous too. Palpitations and just a general feeling of tension. I've been to the Dr and I'm healthy, aside from GAD. But I just need some help with this. 

I want to know I'm not alone in this because it feels like I'm going crazy. And even when I know I'm alright my body tells me to worry all the time. It's exhausting. But I'd feel much better knowing that other people feel like this and get weird health scares because of anxiety. Google is pretty bad at calming my anxiety.