doess reincarnation exist?

lately, for me, things have been getting stranger which makes me think it is because I've been having memories that aren't mine. memories of being at war in world war 2 in the pacific flying over the Japanese-occupied islands of world war 2 and having been shot down and after that everything goes black but the scarier part is that I've never been there and wasn't alive during that time every time I close my eyes and I get these images and videos in my mind playing to me of that event and it stresses me out thinking maybe i was reborn but i keep trying to explain how i knew so much about military vehicles a time period i wasn't born in or alive in