Well I gave it a shot and contacted work about if they could be more flexible about my start time at work because of my anxiety panic attacks. No basically was the answer.
I'm so sorry you are dealing with anxiety and that your boss isn't empathetic. Please don't let anxiety/panic win, you have a full and busy life to live, and you have the right to do so
I have been in your shoes, for years actually I've even ended up in A&E thinking I was having a heart attack, but it was 'just' anxiety.
I really recommend the DARE program to you, it's changed my life and I'm fully recovered from anxiety and panic. It's really easy to understand, not expensive and there's loads of support. I've also heard that hrt really improves mood and stops the panic/anxiety attacks that affect so many of us in perimenopause/menopause.
There is light at the end of the tunnel, you just have to keep going and things will change!