fear of not wearing clothes

i have an intense anxiety about forgetting to wear my lower pants whenever i leave my apartment to do something in the communal era. like taking out the trash, buying foods, picking up delivery, blah blah. false memory/moral/contamination OCD is also an obsessions that appears the most in my case. i always wear a jacket with it too so that's some modesty but i cannot for the life of me remember if i was wearing shorts or underwear.

my ocd flares up make me genuinely think i didn't wear it sometimes when im already back in my room, then it would continue to some dangerous territory like

“okay what if you poop/pee yourself and there isn't any evidence because you weren't wearing pants and the stool/pee just drop straight down the floor” like im a dog or something. mind you the possibility of these body fluids not even dirtying/sliding down my thighs/legs is very impossible. but my ocd cares not about physics. i think living with many other residents also increase my anxiety.

how to cope with it? i feel like taking a picture of me wearing my pants during my trip would help a lot but that is a compulsion right? but i genuinely cannot live like this, spiraling for 6 hours (yes you read that right) over my pants and nakedness. even naps doesn't help anymore, i just woke up and feels even worse.

does anyone else have this fear? i will bring it up to my therapist for sure, but the next appointment is in months and i cannot cope with it in the meantime. am i alone in this?