Hi @JuneXie I was diagnosed HER+ in October 2021 with a large tumor and a lot of lymph node involvement. I started chemo first and that went for six months then it was surgery. I can remember feeling as you have described no knowing if all this chemo would shrink my tumor and was it really working while I was going through it, but when I went for my ultrasound prior to surgery the chemo had certainly had an impact and had significantly shrunk the tumor.
I think in all this at the time of diagnosis, the brain tells us we just want to "get it out" and we should be having surgery like right now. It is so hard but you have to trust in the medical team you have around you and trust in they are choosing the right path of treatment for you.
Wishing you the best and sending you a massive hug xx