Bizarre dreams

Alot of poeple say that...In my class we all sort of talk about our dreams and there is alot of I saw my dead grandma or grandpa sorta thing. I really do not know much about stuff like that but it seems to me that there was prob something else in the dream that happened and they just cant remeber it. If there is something in your dream that you are really not ready to think about then you will start to have other random dreams that try to make you forget about the one you had that involved what ever was traumatic. Plus after a recent lose of something or someone you love you often dream about it alot just because your trying so hard not to think about it when your awake because you dont want to face that pain again so it will come up in your dreams.