@Littlemiss74 Well it's a mix of practical tricks/brain training and a bit of education about things like probability and catastrophic thinking.
I talked with a counsellor a bit so he could see the sort of things I kept thinking and then he gave me some information about why I thought that way and what reality is like - which were different. The worst hardly ever happens so why keep preparing for it - we looked at the roots of why I felt I needed to control things and how that was impossible.
I then learned about the 'Worry Time technique' which is giving yourself about half an hour a day to worry like hell and write it all down no matter how daft the thoughts are - even the ones you think are silly as well as the really dark thoughts - so you can review them next day. I found destroying the notes with extreme prejudice rather satisfying, once the thing I was worrying about was ended.
And then I learned techniques for distractions and training yourself not to think about your worries the rest of the time. They came in handy when I did CBT for insomnia later which worked even better because it was even more practical.... and good sleep helps heal you and protect you against other forms of anxiety.
I admit I wasn't brilliant at Worry Time because my thoughts do have a habit of breaking out and running rampant for a short while until I distract myself but the insights into my thinking styles and how they were specifically magical thinking did help me a lot as I started seeing things a bit more realistically.
And I did notice that the things I was worrying about a month previously would disappear and new worries would happen - but if the thing I was worried about never happened, why was I so worried about it? What was the point of preparing and spending all that energy on it. It didn't help me get better when I was poorly.
It's different seeing it in black and white on my Worry-Time diary sheet thingy. It's kind of like re-educating yourself about what is really worth worrying about.
I am going to the hospital for investigations myself at the moment. I am deliberately not googling it in order to limit my exposure to worry. This is different to what i used to do. I am also putting more trust in the consultants and doctors. They know what they are talking about more than me. I am not feeling too bad at the moment which is new.
I hope that helps. I know how debilitating it is and, when I was in the hospital today, I was sat near to a woman who was really suffering from anxiety. Her friend was with her and her friend got her talking about her dogs which really helped her, you could hear her voice getting stronger. She was brilliant. Talking about the things, people, animals you love and feeling that love, it will make you feel better during the dark times.
Also love yourself. You're a mum and your DD is the most previous new person ever. What you are feeling is the sensations of a momma bear who is trying to fight the predators off to protect your baby. I hope you have someone you can trust to vent and rant to to share some of that weight on your shoulders. It is not wrong to care this much. You may find that as the weeks pass you will start to get a handle on this quite naturally.