Yes. It happens to me a lot, though usually I know they are not actually my memories. Sometimes I end up just going with it because it's so ridiculous the things that are put into my mind, it's like a joke to me. I understand it as some kind of collective and it is many other people unconsciously syncing up with me, especially while I am asleep, which is why I feel my dreams are actually memories. It's strange because sometimes I forget who I am and I think I'm one of these other people, but maybe that is some kind of dissociation? I dunno.