You had a lot on the go dear. Putting on 2 different shoes is probably the result of your mind being preoccupied with other things going on.
Long before my MS diagnosis, I went to work on a Wednesday wearing my jeans. Monday to Thursday are definitely not jeans days. They're business casual days! Not to mention (freaky), my coworker who certainly does not have MS showed up in jeans on that very same day!
The manager laughed and gave us both 'free pass' buttons to wear for the day. Basically suggesting we had won some 'team challenge' so management would not give us a rough time.
I can honestly say I had completely had a brain fart, but she said "Oh I just didn't want to dress up today". LOL.