How do you cope when you feel scared and alone after breast cancer diagnosis?

I was diagnosed with breast cancer on June 3rd, I haven't started treatments yet but have had a biopsy, mri, ctscan, and next week, a bone scan. Im HERS2+ (HR+). I have 2 large masses and some small masses in my right breast with it mastasized to my lymph nodes under my arm, and I just found that I have a few small nodules in my right lung which may or may not be cancerous. I am petrified to what is going to happen. It's funny how horrifying this is to me considering I was born with Congenital Hydrocephalus and have had close to 60 brain surgeries to revise and replace 2 shunts throughout my 53 years and another brain surgery doesn't faze me. I don't have much support, at least not the kind I need most of time, my loved ones are there for me and understanding, but it doesn't seem to register with them how completely petrified I am, and sometimes a hug or embrace to let me cry and scream is all I want.