I had a similar non lucid dream experience

I am in a building with a group of youths and I suddenly realise my wallet is missing! I panic and start asking the kids if they seen my wallet around anywhere? This girl said I left it by the side of the swimming pool when I changed to go swimming. I said oh yeah !! thanks and I walked through a couple doors down a hall strait to the pool where I knew my wallet was.

After I woke up I realised something a little odd. Before the girl told me where my wallet was I had no Idea about the swimming pool, it wasnt even part of my dream but after she told me it all clicked in. I knew right where to go to find the pool. Like a false memory was implanted.