Hi, I am about to have my third cycle of FEC on wednesday this week, but over the last few weeks I have developed very bad knee and ankle discomfort I am finding it very difficult to bend my knees and experiences pain in my ankles if I walk for more than 10 mins or so. Has anyone else suffered any of the these side effects from FEC? I don't know if it a side effect or something else, do I tell the oncologist or go to…