Just diagnosed at 33 and so scared

I just got a diagnosis of IDC and NIDC yesterday…I’m 33 years old, no family history, and have a 13 month old son. I’m absolutely terrified. I found a lump about a month or so ago and fortunately my provider sent me for a mammogram, ultrasound, and the biopsy. It doesn’t look like it’s in my lymph nodes, but it’s grade 3. My tumor is about 14 mm. Any words of encouragement are much appreciated.