Vague

Do you ever suddenly flash back to a memory and you think about it for awhile and it doesn't seem real anymore?  It feels like you made the memory up and you don't know which memories are real and which ones are counterfeit.  This has been happening to me a lot lately.  I can't tell the difference between my dreams and my memories.  Maybe I'm just over-thinking everything but it's just weird.  Like today I was just sitting on the couch and my cousin Derek's voice just popped into my head.  I remember sitting around the table at my Grandparent's house playing cards.  I was the scorekeeper and I was writing all the player's names on a pad of paper.  I was probably 6 or 7 and my cousin was probably 20-21.  But I just remember him saying, "Hey, look you spelled my name right."  Idk why I remember that.  Maybe I was super proud or something.  Derek.  Pretty easy name.  As I was thinking about this memory I suddenly thought that it was all fake.  That is never happened.  Why?  It's just too weird.  I don't know what to think.  Crazy!