Hi Peta,
Sorry to hear about your diagnosis. I'm not in exactly the same situation but i was diagnosed last year at 31 (triple negative with no family history and negative gene testing) whilst 31 weeks pregnant. I also attend a young womens breast cancer support group with women who are in similar situations to you.
I guess everyones experience is different I know to start with i went into project management mode trying to sort my way through appointments, information and decision making. I was lucky and have a very supportive husband and family who have been with me every step of the way.
It is such a scary time and one thing i realised early on was that it was a journey rather than something that will be cured over night. Having a newborn was helpful as it gave me something else to focus on at times (when the whole cancer thing can be overwhelming) but also challenging as i wasn't able to always take the time out for myself that i think would have benefited me during treatment and recovery.
I hope you have a medical team you are happy and feel confident with and have been put in touch with a breast care nurse - they are truly invaluable. I have also found seeing a psychologist really helpful, i managed to get in with one who specialises in cancer patients,
is there anything you want specific advice on? Happy to ask my support group what their advice is.
Happy to help in anyway i can, hang in there.