MS and Breast cancer

New to reddit and never posted here but freaking out about my MS treatment. I’m having a double breast biopsy tomorrow. I’m currently taking kesimpta and have been for 2 years. It’s working great. No new lesions. My radiologist said he’s more concerned about confirming cancer as he suspects that is what he’s seeing. (Junk bedside manner to say the least. 😫) Praying for the best but preparing for the worst.
Does anyone know what the deal is with Kesimpta and cancer treatment? Can I keep taking it? My neurologist is amazing and is being notified asap if it’s malignant, but I feel stupid asking her. I’m trying to be positive outside but inside I am freaking out.
Sorry if this is a garbled mess.