Oh God, yes, can relate! This and much much more. I do have dx of ADD too though. Frankly I think the BP and ADD team up for this mischief(!) Or as I call them, "major contributors to the Space Cadet Academy". Showing up on the wrong day? Oh yeah. One of those times, I walked in to see someone already sitting there waiting, and even so didn't realize the error for awhile(!) (It's a one person office with no receptionist, so multiple people waiting is not the usual.)

I cannot set anything down while I'm out or it will be forgotten. I hate stores where they make you leave a bag at the counter. I usually won't even go in, because I have never remembered to pick it back up on the way out. Three blocks away I might wonder why I feel different, only to realize why and have to go back. My wallet is attached with a cord to my bag. BF insisted upon this after a major incident. It feels stupid, but it really has helped. You know how they do the cash back at checkouts? I'm always wondering why they're handing me money(!) No joke. Oh right! I just now asked for it! Notorious for leaving the purchase at the counter and walking away. When they call out, I always joke, "Oh, I just wanted to hand you some money today!"

Though I keep notes and a calendar, I still have to set my phone alarms to remember things because I will either forget to look at the notes/calendar or look at them and not realize what day it is. I am never w/o paper and pen. If I don't write it down (or do it) immediately, it will be forgotten. It's quite bad. It's never good, but some days are worse than others. Not entirely sure why, but stress levels may well play into that variation. I even brought it up with a regular doctor recently, because between that and a physical thing, it makes functioning very challenging. Next visit, cognitive testing. I asked if there was a cheat sheet. Lol.

My big weirdness is that I totally remember and can parrot tons of dialogue from shows I watch, but couldn't tell you if I ate lunch or what it was. Did some thing happen that day? Yesterday? Last week? Who knows. What on earth did I do today?! Makes filling out my mood chart a bit of a challenge sometimes(!) So yes, can definitely relate. You might find it helpful to try using some of the compensatory strategies used by people with ADD (such as everything having a place and putting a thing in that place always and immediately...) Even doing all these things, it can be a struggle, but it does help (and minimize the occurrence of me flipping my **** because I can't find something and am (of course) running late).