Id say its probably more likely somethig happened and youve repressed the memory but its now coming out off yu one way or another. I would definitwly brig it up with ypur T so you can work through. Whether its somethig that genuinwky happened or somethin you 'thought up' its obviously still really affectig you so needs resolving. Just say what youve said here how you dont know if its true or not, then you should be able to work theough it with your T and understand it. Dont keep tryig to shut the lid.