I agree! There are many things that could be going on...a suggestion if you want to dive further into this...try to write down the various varibles going on that day...where you depressed, manic, taking new meds, did you get enough sleep, or too much, missed taking meds, significant other yelled at you and you were distracted,etc. As you have any future cognition issues do the same...you may find a bit of a trend.