This situation requires immediate medical attention. A fever combined with low blood pressure in a CML patient undergoing therapy can indicate a serious infection called febrile neutropenia, which needs urgent care. Please go to the nearest emergency room right away. The hospital team will promptly start intravenous (IV) fluids to help raise the blood pressure and administer broad-spectrum IV antibiotics (such as piperacillin-tazobactam or cefepime) to fight infection. Do not take any fever-reducing medicines at home beforehand, as they can mask symptoms. Try to remain calm, but act quickly to get to the emergency department, where doctors are fully prepared to manage this safely.