im sorry.. i know all about uncertainty...
oh how i hate it... im really sorry...
all i can think to say in this moment is to try not to dwell on it...
i have a problem with obsession myself so it can be hard... but i have been trying to practice "emptying" my mind...
there is like no need to have anything going on up there anyway... just need to empty it all out... especially since all the stuff in my mind is toxic... i dunno if something like that can help for you... it sometimes helps for me when i can get it to work... if i dont end up going into a trance or falling asleep...

talking it out sometimes helps release the fears as well, can always talk it out with us if you wanted i suppose