Mom has BC

Hi! I just joined this forum to meet others who are going through similar experiences and can give any support and/or advice. My mom was just diagnosed with BC in both breasts, 2 different types. One is lobular and the other is ductal. One tumor is the size of an orange and the other is the size of a plum. The cancer had also broken through her skin. We have an apt tomorrow to get results of all of her tests and find out the staging. I already figure she’s at stage 3 based on tumor size and the fact that it’s in her skin. Her CT Scan was clear though. The doctor said there was no evidence of cancer anywhere else, only a few swollen lymph nodes under her arms. She had a PET Scan after that though and we will get results tomorrow. Has anyone else had a clear CT Scan but then had a PET Scan pick something up? I’m so scared! My mother is my everything and she is so close to my kids as well. They aren’t going to handle this well.