Welcome to the forum. There's lots of chat and support on here. You can also chat to the macmillan nurses by message or telephone. Cancer care is a good place to chat and receive therapies. You can also join the look good feel good forums.
I was where you are last year. I've now had my lumpectomy and sentinels removed, chemo, radiotherapy. Now on Letrozole and 6 monthly bone infusions. I found all of the above very useful.
It's also helpful to speak with others in similar circumstances and those further along their journey for advice and coping skills.
I wish you well with your treatment and recovery. Happy to answer any questions you might find helpful.
