Hi. I've been clear of breast cancer 5 years now but still on medication as also had uterine problems. Last few days I've been sore and achy down left side (do have costachrondritus after radiotherapy) but today I've found a hard swollen lump under my armpit. I've had lymph nodes removed so I'm anxious as to what it might be. So hard to get a drs appointment at moment . Any advice? Thanksx