First off I have stage IV breast cancer with a single nodule measuring 1.5 cm in my upper left lobe. So I had considerable back pain about a week and a half ago which caused me to go to the ER. While there they did a battery of tests, labs CT scans. After all of this they found that the pain I had was likely muscular. Node was stable, lymph nodes were slightly increased in size. The scans said nodule was grossly stable. So I got access to my patient portal today and I looked over my lab work. My platelets were 450 and it stated that vacuolated neutrophils were present. Of course I googled this and now I’m freaking out. I’m currently on Ibrance and Arimidex. The ER doc didn’t mention any sort of infection etc. I just got access to read my labs yesterday but it’s been over 7 days since my visit. I feel a little fatigued and my sinuses are BANANAS, but nothing to make me panic. Did they miss something in the ER? Is this something serious?