Hi annajjj
It is completely normal to feel anxious following a breast cancer diagnosis.
it is a huge shock and a lot to take in.
you are at the right place on this forum as we have all been there.
Even though rationally I know I had a great team of Doctors and was in a great facility, the emotional side of me was running riot ( there is a great lady on here with the pen name of “ riot at midnight” which really resonated with me).
There are many suggestions for trying to calm yourself down including deep breathing, meditation, and listening to music.
whatever works for you.
it WILL get better , I found myself a lot calmer once I had a confirmed surgery date ( I had a left mastectomy for lobular cancer) and then once I was being wheeled into the operating theatre I did feel all my cares drift away ( actually I think that was the anaesthetic!)
One other thing is you will cry a lot and that’s ok, it’s all part of coming yo terms with the loss.I called it “ the loss of my bulletproof self”.
Keep well and don’t hesitate to post on here and read other’s stories, I found it really helpful.