My mother, who is 59 years old, was diagnosed with stage 4 ovarian cancer in 2021. She underwent an emergency Hartmann's procedure in August 2021 and had her ovaries removed in January 2022. She now has a permanent colostomy bag. Following her surgeries, she received 6 rounds of chemotherapy - 3 rounds after the Hartmann's procedure and 3 rounds after the operation on her ovaries. In October 2023, she was informed that the cancer had metastasized to her lungs. A CT scan in January 2024 led the oncologist to decide that she no longer requires additional chemotherapy. She has been experiencing symptoms such as shortness of breath, heart palpitations, fever, dizziness, vomiting, loss of appetite, and difficulty walking. These symptoms occur every few weeks, with some weeks being better than others. I am concerned about this pattern - should I be worried?