Sympathy to all suffering here.
I can offer what I learned during a hospital-based anxiety programme.
Anxiety is anxiety. It is a persistent bugger and will latch on to whatever your 'weak' spot is. For you guys, it's health. Not surprising, given the constant stream of adverts, leaflets and warnings about illnesses we get bombarded with!
Anxiety is a lie. It's a pure lie. It starts with a thought. That thought then takes off into a spinning circle and all you need to do is stop that circle spinning and it'll stop.
Sounds so easy eh? It's not, but it does work.
CBT is fantastic for anxiety. It helps identify what the thought was that triggered the anxious cycle.
The only way around anxiety is through it. Feel it. It's unpleasant but it's just a physical reaction to what you're thinking. It can't hurt you, it's just anxiety. For some it's tight chest, others a dicky belly, some have headaches and fuzziness. Just physical reactions. They're not harmful.
Did you know your body reacts exactly the sane way when you're excited?! So a bloke watching his team win the match is feeling a dodgy belly and shaky. But he doesn't chalk it down as 'bad' or run from those feelings because he's not associating them with a bad thing. He's excited, so those feelings are ok. You're anxious, those feelings are ok too.