TRIGGER WARNING: Cancer.

I'm posting this in the female section as I'd rather hear from women right now (no offense). I'm spiralling with HA right now and cannot tell what is concerning and what to ignore.
I have 2 close family members (inlaws) going through cancer treatment and testing right now and neither is looking very hopeful. In fact the outlook is pretty terrible. I also know a few young women who have died or are dying recently and it just is pushing all my triggers about cancer and leaving my children behind. I'm actually angry. So many young Mums. I feel very sad for both of my relatives and am trying hard NOT to make this about me.

I am desperate to be rid of health anxiety. I've tried nlp, hypnotherapy, read books on the subject, meditation, yoga, journaling, praying. Nothing has worked if fact things are worse than ever. I know I am being negative and hopeless but I can't see a way out right now.

How do you stop the horror stories from making your HA spiral?