Welcome to the forum.
I stopped my HRT on the day of my diagnosis in November. Had my. Mirena coil removed in the sexual health clinic a few hours later and disposed of my oestrogel and ostrogen pessaries. I was expecting hot flushes and night sweats again but experienced neither so hopeful I’m through the menopause. I hope that you too don’t have the return of the menopausal symptoms. I do miss the pessaries as it really helped to stop my now leaking bladder 
I’m also triple positive. HER2 is a protein that binds to the surface of the cancer cells. There are targeted therapies that lock onto the HER2 protein that help to stop the cells from growing and dividing. My surgeon informed me that I was HER2 positive but did not discuss the treatment, said it was the remit of the oncologist to inform me when he discussed the chemo as it was their area of expertise. If you’ve not joined the HER2 thread it may be worthwhile. I’ve found it to be a really friendly, useful and informative group. Its been going for a year so a long read but it’s been really helpful to read that people have got through the treatment and surgery as often our treatment goes on for longer.
Work. I ploughed on while I was going through investigations. It was a welcome distraction from the worries and the routine was helpful however at times it was really hard as like
@rizlacat95 and you, my plan changed several times. I thought I might be able to work in some capacity whilst undergoing the targeted tharepy and chemo but I’ve prioritised myself and been signed off. I’m fortunate as I will get sick pay. I know others have no option but to keep working.
@rizlacat95 i think it’s an entirely normal response to hunker down. It’s hard enough dealing with your own feelings. Repeating and reliving your story can be painful, sad and exhausting. X