This is all part and parcel of Chemo Brain. Being part of a clinical trial, I have to report to my research people after every cycle, and we get to go through a perfect storm of paper work, most of it having to do with tracking reactions and effects to treatment. Even if you don’t do this, it doesn’t hurt to try and keep track of side effects and how long they last. That can help you to bring up stuff you want help dealing with, and let your med staff know what’s going on. And, if your oncologist happens to ask, you have answers. If you are in a clinical trial, keep the dates of when something begins and how long it lasts, your research person will wanna hug you for that.