35 y/o and diagnosed with HER2 positive breast Cancer

I was in a very similar place a few months ago. I am older than you at 44 but I also have two young children 4 and 7. I know how it feels to be scared that my girls could be left without a mother. I am still in treatment (just had a mastectomy a few days ago after 4 months chemo) and sometimes I still fall into the fear. Mostly I stay hopeful and try to just keep living as I had with positivity and hope. Once you are in active treatment and your plan is laid out things do get better. One good thing to know about HER2+ cancers is that even though they are more aggressive they are also more treatable. Mine turned out to be IBC (strongly HER2 weakly hormone positive) but it has responded pretty well to the targeted treatment. Will find out next week if the response was partial or complete. I wish you the very best with your surgery and chemo, whichever comes first. If ever you need someone to talk to privately feel free to message me.