This is one of the first things that happened to me. I have actually been diagnosed with short term memory loss although they are not sure if it is from the Lupus itself or the seizures that the Lupus brought on. I keep a white board in my kitchen so things I need to be reminded of during the day are right in front of me. I use my cell phone for reminders to do things and I even have a medicine app that tells me when it is time to take meds simply because I forget. I have argued with people over things I have no memory of them telling me and, if you can believe this, I can't keep up with how old I am.
So to answer your question... yes, I understand completely